Ubuntu update for libxml2



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-49043
CVE-2024-34459
CWE-ID CWE-416
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

libxml2 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU103502

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-49043

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the xmlXIncludeAddNode() function in xinclude.c. A remote attacker can pass specially crafted XML input to the application, trigger a use-after-free error and crash the application or potentially execute arbitrary code.


Mitigation

Update the affected package libxml2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.04

libxml2 (Ubuntu package): before 2.9.10+dfsg-5ubuntu0.20.04.8

CPE2.3 External links

http://ubuntu.com/security/notices/USN-7240-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

EUVDB-ID: #VU89430

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-34459

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when parsing XML data. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Update the affected package libxml2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.04

libxml2 (Ubuntu package): before 2.9.10+dfsg-5ubuntu0.20.04.8

CPE2.3 External links

http://ubuntu.com/security/notices/USN-7240-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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