GMS-2023-3297: Bundled libwebp in pywebp vulnerable

October 6, 2023

Impact

pywebp versions before v0.3.0 bundled libwebp binaries in wheels that is vulnerable to CVE-2023-4863. The vulnerability was a heap buffer overflow which allowed a remote attacker to perform an out-of-bounds memory write.

Patches

The problem has been patched upstream in libwebp 1.3.2. pywebp was updated to bundle a patched version of libwebp in v0.3.0.

Workarounds

No known workarounds without upgrading.

References

github.com/advisories/GHSA-f9pm-4g9p-6vm3
github.com/anibali/pywebp/commit/1f938731a158a6584977cec2cce21b21c15f6c4b
github.com/anibali/pywebp/security/advisories/GHSA-f9pm-4g9p-6vm3

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