CVE-2018-11490

Name: CVE-2018-11490
Creator: NVD / NIST
Published: 2018-05-26T18:29:00.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.48%

Last modified Jun 17, 2026

CVE-2018-11490 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.. EPSS estimates a 2.48% chance of exploitation in the next 30 days.

Description

The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.48%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Giflib Project	Giflib	>= 3.0, <= 3.1.1
Sam2p Project	Sam2p	0.49.4
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04

References

http://www.securityfocus.com/bid/104327Third Party Advisory, VDB Entry
https://github.com/pts/sam2p/issues/38Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00008.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4107-1/Third Party Advisory
http://www.securityfocus.com/bid/104327Third Party Advisory, VDB Entry
https://github.com/pts/sam2p/issues/38Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00008.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4107-1/Third Party Advisory

Timeline

Published: May 26, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-11490?

How severe is CVE-2018-11490?

CVE-2018-11490 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.48% probability of exploitation in the next 30 days.

How do I fix CVE-2018-11490?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-11490?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST