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Fencer Vulns
high 7.5

CVE-2006-1168 json

The decompress function in compress42.c in (1) ncompress 4.2.4 and (2) liblzw allows remote attackers to cause a denial of service (crash),…

published 2006-08-14 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1172

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.8%
EPSS 5.8% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The decompress function in compress42.c in (1) ncompress 4.2.4 and (2) liblzw allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code, via crafted data that leads to a buffer underflow.

Patch / fix

  • ncompress Debian 14, Debian 13, Debian 12 4.2.4-16

debian advisories DEBIAN-CVE-2006-1168

  • busybox RHEL 6 1:1.15.1-15.el6
  • busybox-petitboot RHEL 6 1:1.15.1-15.el6
  • busybox RHEL 5 1:1.2.0-13.el5
  • busybox-anaconda RHEL 5 1:1.2.0-13.el5
  • ncompress RHEL 3 4.2.4-39.rhel3
  • ncompress RHEL 4 4.2.4-43.rhel4

red hat advisories RHSA-2012:0810RHSA-2012:0308RHSA-2006:0663

  • ncompress openSUSE Tumbleweed 4.2.4.4-1.1

opensuse advisories openSUSE-SU-2024:10385-1

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-2006-1168 updated cvss 5.1

ncompress: .bss buffer underflow in decompression

  • Red Hat Desktop version 3 ncompress 4.2.4-39.rhel3
    fixed: vendor fix RHSA-2006:0663
  • Red Hat Enterprise Linux (v. 5 server) busybox 1.2.0-13.el5, busybox-anaconda 1.2.0-13.el5
    fixed: vendor fix RHSA-2012:0308
  • Red Hat Enterprise Linux AS version 3 ncompress 4.2.4-39.rhel3 Red Hat Enterprise Linux AS version 4 ncompress 4.2.4-43.rhel4
    fixed: vendor fix RHSA-2006:0663
  • Red Hat Enterprise Linux Desktop (v. 5 client) busybox 1.2.0-13.el5, busybox-anaconda 1.2.0-13.el5
    fixed: vendor fix RHSA-2012:0308
  • Red Hat Enterprise Linux Desktop (v. 6) busybox 1.15.1-15.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) busybox 1.15.1-15.el6, busybox-petitboot 1.15.1-15.el6
    fixed: vendor fix RHSA-2012:0810
  • Red Hat Enterprise Linux Desktop version 4 ncompress 4.2.4-43.rhel4 Red Hat Enterprise Linux ES version 3 ncompress 4.2.4-39.rhel3 Red Hat Enterprise Linux ES version 4 ncompress 4.2.4-43.rhel4
    fixed: vendor fix RHSA-2006:0663
  • Red Hat Enterprise Linux HPC Node (v. 6) busybox 1.15.1-15.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) busybox 1.15.1-15.el6, busybox-petitboot 1.15.1-15.el6 Red Hat Enterprise Linux Server (v. 6) busybox 1.15.1-15.el6 Red Hat Enterprise Linux Server Optional (v. 6) busybox 1.15.1-15.el6, busybox-petitboot 1.15.1-15.el6 Red Hat Enterprise Linux Workstation (v. 6) busybox 1.15.1-15.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) busybox 1.15.1-15.el6, busybox-petitboot 1.15.1-15.el6
    fixed: vendor fix RHSA-2012:0810
  • Red Hat Enterprise Linux WS version 3 ncompress 4.2.4-39.rhel3 Red Hat Enterprise Linux WS version 4 ncompress 4.2.4-43.rhel4
    fixed: vendor fix RHSA-2006:0663
show 1 more
  • Red Hat Enterprise Linux 4 busybox Red Hat Enterprise Linux 5 ncompress Red Hat Enterprise Linux 6 ncompress
    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

5.82% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.