Use after free in libwebp
CVE-2023-1999

7.5HIGH

Key Information:

Vendor

Chromium

Status
Libwebp
Vendor
CVE Published:
20 June 2023

What is CVE-2023-1999?

A vulnerability exists in libwebp due to improper memory management, specifically a use after free and double free condition. This occurs within the ApplyFiltersAndEncode() function where the best.bw pointer is released in a loop, subsequently leading to an incorrect reassignment. On a second iteration, an out-of-memory error in the VP8 encoder triggers an attempt to free the memory that has already been released, risking exploitation. Attackers can exploit this flaw to potentially execute arbitrary code or cause instability. Users are advised to upgrade to the latest version to mitigate this risk.

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Affected Version(s)

libwebp 0.4.2 < 1.3.1

libwebp 0.4.2 < 1.3.0-8-ga486d800

References

https://chromium.googlesource.com/webm/libwebp
https://security.gentoo.org/glsa/202309-05

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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