Fix: add const for libxml2 2.12.0 API change

[mattmundell]

What

Adjust type for return from xmlCtxtGetLastError.

Why

The libxml2 API changed.

References

libxml return type was changed in 61034116d0a3c8b295c6137956adc3ae55720711.
See discussion here and here.

Closes #855.

Test

1. Install libxml2 2.13.5 from source.
2. Ensure it's used

--- util/CMakeLists.txt
+++ util/CMakeLists.txt
@@ -34,7 +34,7 @@ pkg_check_modules (LIBSSH REQUIRED libssh>=0.6.0)
 pkg_check_modules (REDIS REQUIRED hiredis>=0.10.1)
 
 # for fast XML we need libxml2
-pkg_check_modules (LIBXML2 REQUIRED libxml-2.0>=2.0)
+pkg_check_modules (LIBXML2 REQUIRED libxml-2.0>=2.13)
 
 # for gpgmeutils we need libgpgme
 pkg_check_modules (GPGME REQUIRED gpgme>=1.7.0)

3. Compile gvm-libs, before PR output was:

/home/user/fresh/main/gvm-libs/util/xmlutils.c:3034:29: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
 3034 |                   xml_error = xmlCtxtGetLastError (iterator->parser_ctxt);
      |                             ^

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Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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⚠️: No snapshots were found for the head SHA 3b87a09.

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OpenSSF Scorecard

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🔍 Vulnerabilities of harbor-os.greenbone.net/community/gvm-libs:857-merge-amd64

📦 Image Reference harbor-os.greenbone.net/community/gvm-libs:857-merge-amd64

digest	sha256:c66d4023d58027fab754baa775799f4eb77a3bd8550fe4d4c56a8dce6459f076
vulnerabilities
platform	linux/amd64
size	78 MB
packages	198

📦 Base Image debian:testing-20241223-slim

also known as	testing-slim
digest	sha256:4a8e51c14260356eb52778260ef0a4080bbf6cb4698adeeba3fbdf85f7947a85
vulnerabilities

libxml2 2.12.7+dfsg+really2.9.14-0.2+b1 (deb) pkg:deb/debian/[email protected]%2Bdfsg%2Breally2.9.14-0.2%2Bb1?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.12.7+dfsg+really2.9.14-0.2 Fixed version Not Fixed EPSS Score 0.046% EPSS Percentile 19th percentile Description An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free. Affected range >=2.12.7+dfsg+really2.9.14-0.2 Fixed version Not Fixed EPSS Score 0.079% EPSS Percentile 36th percentile Description libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when memory allocations fail." Affected range >=2.12.7+dfsg+really2.9.14-0.2 Fixed version Not Fixed EPSS Score 0.063% EPSS Percentile 29th percentile Description Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input. Affected range >=2.12.7+dfsg+really2.9.14-0.2 Fixed version Not Fixed EPSS Score 0.044% EPSS Percentile 12th percentile Description An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.

pam 1.5.3-7 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=1.5.3-7 Fixed version Not Fixed EPSS Score 0.054% EPSS Percentile 24th percentile Description A vulnerability was found in PAM. The secret information is stored in memory, where the attacker can trigger the victim program to execute by sending characters to its standard input (stdin). As this occurs, the attacker can train the branch predictor to execute an ROP chain speculatively. This flaw could result in leaked passwords, such as those found in /etc/shadow while performing authentications. Affected range >=1.5.3-7 Fixed version Not Fixed EPSS Score 0.091% EPSS Percentile 40th percentile Description A flaw was found in pam_access, where certain rules in its configuration file are mistakenly treated as hostnames. This vulnerability allows attackers to trick the system by pretending to be a trusted hostname, gaining unauthorized access. This issue poses a risk for systems that rely on this feature to control who can access certain services or terminals.

glibc 2.40-4 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.099% EPSS Percentile 42nd percentile Description In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\1\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.352% EPSS Percentile 72nd percentile Description GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability. Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 2.333% EPSS Percentile 89th percentile Description GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat. Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.929% EPSS Percentile 83rd percentile Description GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat. Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.594% EPSS Percentile 78th percentile Description GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat. Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.295% EPSS Percentile 69th percentile Description In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\1\1|t1|\\2537)+' in grep. Affected range >=2.40-4 Fixed version Not Fixed EPSS Score 0.884% EPSS Percentile 82nd percentile Description The glob implementation in the GNU C Library (aka glibc or libc6) allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in STAT commands to an FTP daemon, a different vulnerability than CVE-2010-2632.

openldap 2.5.19+dfsg-1 (deb) pkg:deb/debian/[email protected]%2Bdfsg-1?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.5.19+dfsg-1 Fixed version Not Fixed EPSS Score 0.160% EPSS Percentile 53rd percentile Description libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux. Affected range >=2.5.19+dfsg-1 Fixed version Not Fixed EPSS Score 0.492% EPSS Percentile 76th percentile Description contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation. Affected range >=2.5.19+dfsg-1 Fixed version Not Fixed EPSS Score 0.051% EPSS Percentile 22nd percentile Description slapd in OpenLDAP 2.4.45 and earlier creates a PID file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for PID file modification before a root script executes a "kill cat /pathname" command, as demonstrated by openldap-initscript. Affected range >=2.5.19+dfsg-1 Fixed version Not Fixed EPSS Score 0.299% EPSS Percentile 69th percentile Description The nss_parse_ciphers function in libraries/libldap/tls_m.c in OpenLDAP does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a weaker than intended cipher to be used and allow remote attackers to have unspecified impact via unknown vectors.

krb5 1.21.3-3 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=1.21.3-3 Fixed version Not Fixed EPSS Score 0.043% EPSS Percentile 11th percentile Description Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c. Affected range >=1.21.3-3 Fixed version Not Fixed EPSS Score 0.043% EPSS Percentile 11th percentile Description Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c. Affected range >=1.21.3-3 Fixed version Not Fixed EPSS Score 0.043% EPSS Percentile 11th percentile Description Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c. Affected range >=1.21.3-3 Fixed version Not Fixed EPSS Score 0.087% EPSS Percentile 39th percentile Description An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.

coreutils 9.5-1+b1 (deb) pkg:deb/debian/[email protected]%2Bb1?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=9.5-1 Fixed version Not Fixed EPSS Score 0.042% EPSS Percentile 5th percentile Description In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition. Affected range >=9.5-1 Fixed version Not Fixed EPSS Score 0.042% EPSS Percentile 5th percentile Description chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

sqlite3 3.46.1-1 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=3.43.1-1 Fixed version Not Fixed Description sqlite3 v3.40.1 was discovered to contain a segmentation violation at /sqlite3_aflpp/shell.c. Affected range >=3.46.1-1 Fixed version Not Fixed EPSS Score 0.284% EPSS Percentile 68th percentile Description A Memory Leak vulnerability exists in SQLite Project SQLite3 3.35.1 and 3.37.0 via maliciously crafted SQL Queries (made via editing the Database File), it is possible to query a record, and leak subsequent bytes of memory that extend beyond the record, which could let a malicious user obtain sensitive information. NOTE: The developer disputes this as a vulnerability stating that If you give SQLite a corrupted database file and submit a query against the database, it might read parts of the database that you did not intend or expect.

shadow 1:4.16.0-7 (deb) pkg:deb/debian/shadow@1:4.16.0-7?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=1:4.16.0-7 Fixed version Not Fixed EPSS Score 0.045% EPSS Percentile 17th percentile Description shadow-utils (aka shadow) 4.4 through 4.17.0 establishes a default /etc/subuid behavior (e.g., uid 100000 through 165535 for the first user account) that can realistically conflict with the uids of users defined on locally administered networks, potentially leading to account takeover, e.g., by leveraging newuidmap for access to an NFS home directory (or same-host resources in the case of remote logins by these local network users). NOTE: it may also be argued that system administrators should not have assigned uids, within local networks, that are within the range that can occur in /etc/subuid. Affected range >=1:4.16.0-7 Fixed version Not Fixed EPSS Score 0.172% EPSS Percentile 55th percentile Description initscripts in rPath Linux 1 sets insecure permissions for the /var/log/btmp file, which allows local users to obtain sensitive information regarding authentication attempts. NOTE: because sshd detects the insecure permissions and does not log certain events, this also prevents sshd from logging failed authentication attempts by remote attackers.

glib2.0 2.82.4-1 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.82.4-1 Fixed version Not Fixed EPSS Score 0.155% EPSS Percentile 52nd percentile Description GLib 2.31.8 and earlier, when the g_str_hash function is used, computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this issue may be disputed by the vendor; the existence of the g_str_hash function is not a vulnerability in the library, because callers of g_hash_table_new and g_hash_table_new_full can specify an arbitrary hash function that is appropriate for the application.

perl 5.40.0-8 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=5.40.0-8 Fixed version Not Fixed EPSS Score 0.158% EPSS Percentile 53rd percentile Description _is_safe in the File::Temp module for Perl does not properly handle symlinks.

util-linux 2.40.2-13 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.40.2-13 Fixed version Not Fixed EPSS Score 0.047% EPSS Percentile 19th percentile Description A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an "INPUTRC" environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read root-owned files, potentially leading to privilege escalation. This flaw affects util-linux versions prior to 2.37.4.

gnutls28 3.8.8-2 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=3.8.8-2 Fixed version Not Fixed EPSS Score 1.433% EPSS Percentile 86th percentile Description The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts data by using CBC mode with chained initialization vectors, which allows man-in-the-middle attackers to obtain plaintext HTTP headers via a blockwise chosen-boundary attack (BCBA) on an HTTPS session, in conjunction with JavaScript code that uses (1) the HTML5 WebSocket API, (2) the Java URLConnection API, or (3) the Silverlight WebClient API, aka a "BEAST" attack.

openssl 3.3.2-2 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=3.2.2-1 Fixed version Not Fixed EPSS Score 0.066% EPSS Percentile 31st percentile Description OpenSSL 0.9.8i on the Gaisler Research LEON3 SoC on the Xilinx Virtex-II Pro FPGA uses a Fixed Width Exponentiation (FWE) algorithm for certain signature calculations, and does not verify the signature before providing it to a caller, which makes it easier for physically proximate attackers to determine the private key via a modified supply voltage for the microprocessor, related to a "fault-based attack."

gnupg2 2.2.45-2 (deb) pkg:deb/debian/[email protected]?os_distro=trixie&os_name=debian&os_version=unstable Affected range >=2.2.45-2 Fixed version Not Fixed EPSS Score 0.046% EPSS Percentile 19th percentile Description GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.