CVE-2021-3518
HIGH severity · CVSS 8.8 · Use-after-free
8.8CVSS HIGH
Summary
There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1954242 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=1954242Patch
- http://seclists.org/fulldisclosure/2021/Jul/54Advisory
- http://seclists.org/fulldisclosure/2021/Jul/55Advisory
- http://seclists.org/fulldisclosure/2021/Jul/58Advisory
- http://seclists.org/fulldisclosure/2021/Jul/59Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.htmlAdvisory