Integer signedness error in ansi.c for GNU screen 4.0.1 and earlier, and 3.9.15 and…
Priority MEDIUM 49Published · 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
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Integer signedness error in ansi.c for GNU screen 4.0.1 and earlier, and 3.9.15 and earlier, allows local users to execute arbitrary code via a large number of ";" (semicolon) characters in escape sequences, which leads to a buffer overflow.
Why it matters now
EPSS 0.03552 89th 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 · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:screen:3.9.4:*:*:*:*:*:*:* | 3.9.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.8:*:*:*:*:*:*:* | 3.9.8 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.9:*:*:*:*:*:*:* | 3.9.9 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.10:*:*:*:*:*:*:* | 3.9.10 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.11:*:*:*:*:*:*:* | 3.9.11 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.13:*:*:*:*:*:*:* | 3.9.13 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:3.9.15:*:*:*:*:*:*:* | 3.9.15 | Vulnerable | GNU |
| cpe:2.3:a:gnu:screen:4.0.1:*:*:*:*:*:*:* | 4.0.1 | Vulnerable | GNU |
- cpe:2.3:a:gnu:screen:3.9.4:*:*:*:*:*:*:* Versions 3.9.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.8:*:*:*:*:*:*:* Versions 3.9.8 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.9:*:*:*:*:*:*:* Versions 3.9.9 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.10:*:*:*:*:*:*:* Versions 3.9.10 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.11:*:*:*:*:*:*:* Versions 3.9.11 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.13:*:*:*:*:*:*:* Versions 3.9.13 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:3.9.15:*:*:*:*:*:*:* Versions 3.9.15 Vulnerable ·GNU
- cpe:2.3:a:gnu:screen:4.0.1:*:*:*:*:*:*:* Versions 4.0.1 Vulnerable ·GNU
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0972
- 2026-10-03 Alias added: GHSA-m666-c5wx-qfvx
References
More GNU Screen vulnerabilities
- TI-2023-10233 socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on… CVSS 3.1MEDIUM 6.5
- TI-2021-08542 encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of… CVSS 3.1CRITICAL 9.8
- TI-2020-07488 A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape… CVSS 3.1CRITICAL 9.8
- TI-2017-03620 GNU screen before 4.5.1 allows local users to modify arbitrary files and consequently… CVSS 3.0HIGH 7.8
- TI-2007-02947 GNU screen 4.0.3 allows local users to unlock the screen via a CTRL-C sequence at the… CVSS 2.0HIGH 7.2
- TI-2002-01524 Buffer overflow in the Braille module for GNU screen 3.9.11, when HAVE_BRAILLE is… CVSS 2.0MEDIUM 4.6
Sources
- CVE-2003-0972 · CVE Program
- CVE-2003-0972 · NVD
- FIRST EPSS
- GHSA-m666-c5wx-qfvx · GitHub Advisory Database · CC BY 4.0
- CVE-2003-0972 · Red Hat security data · CC BY 4.0
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