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Fencer Intel
medium 5.1

CVE-2011-3170 json

The gif_read_lzw function in filter/image-gif.c in CUPS 1.4.8 and earlier does not properly handle the first code word in an LZW stream, wh…

published 2011-08-19 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3137

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

The gif_read_lzw function in filter/image-gif.c in CUPS 1.4.8 and earlier does not properly handle the first code word in an LZW stream, which allows remote attackers to trigger a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted stream, a different vulnerability than CVE-2011-2896.

Patch / fix

  • cups Debian 14, Debian 13, Debian 12 1.5.0-8

debian advisories DEBIAN-CVE-2011-3170

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-3170 updated cvss 5.1

cups: gif_read_lzw() does not properly handle first code word in an LZW stream, which may lead to arbitrary code execution

  • Red Hat Enterprise Linux 4 cups Red Hat Enterprise Linux 5 cups Red Hat Enterprise Linux 6 cups, cups-lpd, cups-php, cups-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.95% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.