The huft_build function in inflate.c in gzip before 1.3.13 creates a hufts (aka huffman)…
Priority LOW 37CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The huft_build function in inflate.c in gzip before 1.3.13 creates a hufts (aka huffman) table that is too small, which allows remote attackers to cause a denial of service (application crash or infinite loop) or possibly execute arbitrary code via a crafted archive. NOTE: this issue is caused by a CVE-2006-4334 regression.
Why it matters now
EPSS 0.04179 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gzip:*:*:*:*:*:*:*:* | up to 1.3.12 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.2.4:*:*:*:*:*:*:* | 1.2.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.2.4a:*:*:*:*:*:*:* | 1.2.4a | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3:*:*:*:*:*:*:* | 1.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.2:*:*:*:*:*:*:* | 1.3.2 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.3:*:*:*:*:*:*:* | 1.3.3 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.4:*:*:*:*:*:*:* | 1.3.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.5:*:*:*:*:*:*:* | 1.3.5 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.6:*:*:*:*:*:*:* | 1.3.6 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gzip:*:*:*:*:*:*:*:* Versions up to 1.3.12 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.2.4a:*:*:*:*:*:*:* Versions 1.2.4a Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3:*:*:*:*:*:*:* Versions 1.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.5:*:*:*:*:*:*:* Versions 1.3.5 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.6:*:*:*:*:*:*:* Versions 1.3.6 Vulnerable ·GNU
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gzip:1.3.7:*:*:*:*:*:*:* | 1.3.7 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.8:*:*:*:*:*:*:* | 1.3.8 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.9:*:*:*:*:*:*:* | 1.3.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.10:*:*:*:*:*:*:* | 1.3.10 | Vulnerable | GNU |
| cpe:2.3:a:gnu:gzip:1.3.11:*:*:*:*:*:*:* | 1.3.11 | Vulnerable | GNU |
- cpe:2.3:a:gnu:gzip:1.3.7:*:*:*:*:*:*:* Versions 1.3.7 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.8:*:*:*:*:*:*:* Versions 1.3.8 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.9:*:*:*:*:*:*:* Versions 1.3.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.10:*:*:*:*:*:*:* Versions 1.3.10 Vulnerable ·GNU
- cpe:2.3:a:gnu:gzip:1.3.11:*:*:*:*:*:*:* Versions 1.3.11 Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2009-2624
- 2026-10-03 Alias added: GHSA-fx63-8q93-pfr5
References
Other 6
More GNU Gzip vulnerabilities
- TI-2022-01156 Improper input validation in gzip, xz-utils CVSS 3.1HIGH 8.8
- TI-2004-00544 gzexe in gzip 1.3.3 and earlier will execute an argument when the creation of a temp file… CVSS 2.0HIGH 10.0
- TI-2010-00001 Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit… CVSS 2.0MEDIUM 6.8
- TI-2001-01181 Buffer overflows in gzip 1.3x, 1.2.4, and other versions might allow attackers to execute… CVSS 2.0HIGH 7.5
- TI-2026-30386 Global Buffer Overflow in GNU gzip CVSS 4.0MEDIUM 6.9
- TI-2005-01163 Directory traversal vulnerability in gunzip -N in gzip 1.2.4 through 1.3.5 allows remote… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2009-2624 · CVE Program
- CVE-2009-2624 · NVD
- FIRST EPSS
- GHSA-fx63-8q93-pfr5 · GitHub Advisory Database · CC BY 4.0
- CVE-2009-2624 · Red Hat security data · CC BY 4.0
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