Buffer overflow in the gzprintf function in zlib 1.1.4, when zlib is compiled without…
Priority MEDIUM 54Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Buffer overflow in the gzprintf function in zlib 1.1.4, when zlib is compiled without vsnprintf or when long inputs are truncated using vsnprintf, allows attackers to cause a denial of service or possibly execute arbitrary code.
Why it matters now
EPSS 0.25987 97th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
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
Remediation
Red Hat 2 advisories
- RHSA-2003:081 Released 2003-05-22 · Red Hat rating Moderatezlib security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Enterprise Linux ES version 2.1
- Red Hat Enterprise Linux WS version 2.1
- Red Hat Linux Advanced Workstation 2.1
- RHSA-2003:079 Released 2003-04-29 · Red Hat rating Moderate: Updated zlib packages fix gzprintf buffer overflow vulnerability
- Red Hat Linux 7.1
- Red Hat Linux 7.2
- Red Hat Linux 7.3
- Red Hat Linux 8.0
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2003:081 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2003:081 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2003:081 |
| Red Hat Linux 7.1 | Fixed | RHSA-2003:079 |
| Red Hat Linux 7.2 | Fixed | RHSA-2003:079 |
| Red Hat Linux 7.3 | Fixed | RHSA-2003:079 |
| Red Hat Linux 8.0 | Fixed | RHSA-2003:079 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2003:081 |
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0107
- 2026-10-03 Alias added: GHSA-c9pj-8qx8-ccrw
References
Advisory 10
More Zlib vulnerabilities
- TI-2022-17498 zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in… CVSS 3.1CRITICAL 9.8
- TI-2018-15259 zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if… CVSS 3.1HIGH 7.5
- TI-2026-17794 zlib <= 1.3.1.2 untgz Global Buffer Overflow in TGZfname() CVSS 4.0MEDIUM 4.6
- TI-2016-07970 inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified… CVSS 3.1CRITICAL 9.8
- TI-2026-21613 zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64… CVSS 3.1MEDIUM 5.5
- TI-2002-00055 The decompression algorithm in zlib 1.1.3 and earlier, as used in many different… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2003-0107 · CVE Program
- CVE-2003-0107 · NVD
- FIRST EPSS
- GHSA-c9pj-8qx8-ccrw · GitHub Advisory Database · CC BY 4.0
- CVE-2003-0107 · Red Hat security data · CC BY 4.0
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