Skip to content
Fencer Intel
medium 6.8

CVE-2010-0001 json

Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit platforms, as used in ncompress and probably others, allows…

published 2010-01-29 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-0033

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.8%
EPSS 4.8% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit platforms, as used in ncompress and probably others, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted archive that uses LZW compression, leading to an array index error.

Patch / fix

  • gzip Debian 14, Debian 13, Debian 12 1.3.12-9
  • ncompress Debian 14, Debian 13, Debian 12 4.2.4.3-1

debian advisories DEBIAN-CVE-2010-0001

  • gzip RHEL 3 1.3.3-15.rhel3
  • gzip RHEL 4 1.3.3-18.el4_8.1
  • gzip RHEL 5 1.3.5-11.el5_4.1

red hat advisories RHSA-2010:0061

  • gzip openSUSE Tumbleweed 1.8-1.29

opensuse advisories openSUSE-SU-2024:10059-1

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-2010-0001 updated cvss 6.8

gzip: (64 bit) Integer underflow by decompressing LZW format files

  • Red Hat Desktop version 3 gzip 1.3.3-15.rhel3 Red Hat Enterprise Linux (v. 5 server) gzip 1.3.5-11.el5_4.1 Red Hat Enterprise Linux AS version 3 gzip 1.3.3-15.rhel3 Red Hat Enterprise Linux AS version 4 gzip 1.3.3-18.el4_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) gzip 1.3.5-11.el5_4.1 Red Hat Enterprise Linux Desktop version 4 gzip 1.3.3-18.el4_8.1
    +4 more products
    Red Hat Enterprise Linux ES version 3 gzip 1.3.3-15.rhel3 Red Hat Enterprise Linux ES version 4 gzip 1.3.3-18.el4_8.1 Red Hat Enterprise Linux WS version 3 gzip 1.3.3-15.rhel3 Red Hat Enterprise Linux WS version 4 gzip 1.3.3-18.el4_8.1
    fixed: vendor fix RHSA-2010:0061

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

4.77% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.