What’s Vulnerable › Vulnerabilities

CVE-2019-15133

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-17 · updated 2026-06-17
• Weakness: CWE-369

Description

In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 19.04
• Debian Linux: 10.0
• giflib: before 5.1.7 — fixed in 5.1.7

How to fix

Upgrade to a fixed version: giflib 5.1.7. Check the vendor advisory for mitigations.

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13008
• https://lists.debian.org/debian-lts-announce/2022/12/msg00008.html
• https://usn.ubuntu.com/4107-1/
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13008
• https://lists.debian.org/debian-lts-announce/2022/12/msg00008.html
• https://usn.ubuntu.com/4107-1/

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