What is CVE-2022-23308?

CVE-2022-23308 is a high-severity software vulnerability (Use-after-free) with a CVSS score of 7.5. valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Is CVE-2022-23308 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 5%.

What products does CVE-2022-23308 affect?

Tracked products affected include Debian, macOS, Apple iOS, Fedora, OS X. Check the version you run to see whether it is affected.

How do I fix CVE-2022-23308?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2022-23308

HIGH severity · CVSS 7.5 · Use-after-free

7.5CVSS HIGH

Summary

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)5%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (5)

Debian macOS Apple iOS Fedora OS X

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://github.com/GNOME/libxml2/commit/652dd12a858989b14eed4e84e453059cd3ba340e ↗

Additional information

NVD record
https://github.com/GNOME/libxml2/commit/652dd12a858989b14eed4e84e453059cd3ba340ePatch
http://seclists.org/fulldisclosure/2022/May/33Advisory
http://seclists.org/fulldisclosure/2022/May/34Advisory
http://seclists.org/fulldisclosure/2022/May/35Advisory
http://seclists.org/fulldisclosure/2022/May/36Advisory
http://seclists.org/fulldisclosure/2022/May/37Advisory
http://seclists.org/fulldisclosure/2022/May/38Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/blob/v2.9.13/NEWSAdvisory