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CVE-2006-4336

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent...

7.5 HighFix available

CVE-2006-4336 is a high vulnerability (CVSS 7.5) in Gzip, published September 19, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.96%, the 93rd percentile. Fixed in gzip 1.3.5-15.

Severity
7.5 HighCVSS 2.0, NVD
Exploit chance
5.96%EPSS, 93rd percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.3.5-15gzip +19 more

Description

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Exploit likelihood

5.96%Up 1.5 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gzip
Debian:12
before 1.3.5-15
1.3.5-15
gzip
Debian:13
before 1.3.5-15
1.3.5-15
gzip
Debian:14
before 1.3.5-15
1.3.5-15
gzip
Debian:3.1
From an advisory covering 5 CVEs
before 1.3.5-10sarge2, plus listed versions
1.3.5-101.3.5-10sarge1
1.3.5-10sarge2
gzip
Red Hat:enterprise_linux:3::as
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip
Red Hat:enterprise_linux:3::desktop
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip
Red Hat:enterprise_linux:3::es
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
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Affected packages
PackageAffectedFixed
gzip
Red Hat:enterprise_linux:3::ws
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 5 CVEs
before 0:1.3.3-13.rhel3
0:1.3.3-13.rhel3
gzip
Red Hat:enterprise_linux:4::as
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip
Red Hat:enterprise_linux:4::desktop
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip
Red Hat:enterprise_linux:4::es
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip
Red Hat:enterprise_linux:4::ws
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4
gzip-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 5 CVEs
before 0:1.3.3-16.rhel4
0:1.3.3-16.rhel4

What each source reports

NVD Score used7.5

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
CVE-2006-4336
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE ListNo score

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
CVE-2006-4336
Updated
2026-11-02
EUVDEUVD-2006-4324No score

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
EUVD-2006-4324
Updated
2026-11-03
GitHub AdvisoriesGHSA-fwv6-j4q7-2p64No score

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent...

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
GHSA-fwv6-j4q7-2p64
Updated
2026-11-02
OSVNo score

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
CVE-2006-4336
Updated
2026-11-02
OSVDEBIAN-CVE-2006-4336No score

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.

Record
DEBIAN-CVE-2006-4336
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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