Race condition in bzip2 1.0.2 and earlier allows local users to modify permissions of…
Priority LOW 18Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- 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
Race condition in bzip2 1.0.2 and earlier allows local users to modify permissions of arbitrary files via a hard link attack on a file while it is being decompressed, whose permissions are changed by bzip2 after the decompression is complete.
Why it matters now
EPSS 0.004 34th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bzip:bzip2:0.9:*:*:*:*:*:*:* | 0.9 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9.5_a:*:*:*:*:*:*:* | 0.9.5_a | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9.5_b:*:*:*:*:*:*:* | 0.9.5_b | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9.5_c:*:*:*:*:*:*:* | 0.9.5_c | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9.5_d:*:*:*:*:*:*:* | 0.9.5_d | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9_a:*:*:*:*:*:*:* | 0.9_a | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9_b:*:*:*:*:*:*:* | 0.9_b | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:0.9_c:*:*:*:*:*:*:* | 0.9_c | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0:*:*:*:*:*:*:* | 1.0 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0.1:*:*:*:*:*:*:* | 1.0.1 | Vulnerable | Bzip |
- cpe:2.3:a:bzip:bzip2:0.9:*:*:*:*:*:*:* Versions 0.9 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9.5_a:*:*:*:*:*:*:* Versions 0.9.5_a Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9.5_b:*:*:*:*:*:*:* Versions 0.9.5_b Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9.5_c:*:*:*:*:*:*:* Versions 0.9.5_c Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9.5_d:*:*:*:*:*:*:* Versions 0.9.5_d Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9_a:*:*:*:*:*:*:* Versions 0.9_a Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9_b:*:*:*:*:*:*:* Versions 0.9_b Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:0.9_c:*:*:*:*:*:*:* Versions 0.9_c Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Bzip
Remediation
Red Hat 1 advisory
- RHSA-2005:474 Released 2005-06-16 · Red Hat rating Lowbzip2 security update
- Red Hat Desktop version 3 bzip2-1.0.2-11.EL3.4, bzip2-1.0.2-11.EL3.4.i386, bzip2-devel-1.0.2-11.EL3.4 +3
- Red Hat Enterprise Linux AS version 3 bzip2-1.0.2-11.EL3.4, bzip2-1.0.2-11.EL3.4.i386, bzip2-1.0.2-11.EL3.4.ia64 +9
- Red Hat Enterprise Linux AS version 4 bzip2-1.0.2-13.EL4.3, bzip2-1.0.2-13.EL4.3.i386, bzip2-1.0.2-13.EL4.3.ia64 +9
- Red Hat Enterprise Linux Desktop version 4 bzip2-1.0.2-13.EL4.3, bzip2-1.0.2-13.EL4.3.i386, bzip2-devel-1.0.2-13.EL4.3 +3
- Red Hat Enterprise Linux ES version 3 bzip2-1.0.2-11.EL3.4, bzip2-1.0.2-11.EL3.4.i386, bzip2-1.0.2-11.EL3.4.ia64 +6
- Red Hat Enterprise Linux ES version 4 bzip2-1.0.2-13.EL4.3, bzip2-1.0.2-13.EL4.3.i386, bzip2-1.0.2-13.EL4.3.ia64 +6
- Red Hat Enterprise Linux WS version 3 bzip2-1.0.2-11.EL3.4, bzip2-1.0.2-11.EL3.4.i386, bzip2-1.0.2-11.EL3.4.ia64 +6
- Red Hat Enterprise Linux WS version 4 bzip2-1.0.2-13.EL4.3, bzip2-1.0.2-13.EL4.3.i386, bzip2-1.0.2-13.EL4.3.ia64 +6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2005:474 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2005:474 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-0953
- 2026-10-03 Alias added: GHSA-9fjc-6jmw-8r3m
References
Patch 1
Advisory 8
More Bzip2 vulnerabilities
- TI-2019-09657 BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors. CVSS 3.1CRITICAL 9.8
- TI-2016-02675 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to… CVSS 3.1MEDIUM 6.5
- TI-2005-01190 bzip2 allows remote attackers to cause a denial of service (hard drive consumption) via a… CVSS 2.0MEDIUM 5.0
- TI-2010-00384 Integer overflow in the BZ2_decompress function in decompress.c in bzip2 and libbzip2… CVSS 2.0MEDIUM 5.1
- TI-2008-01321 bzlib.c in bzip2 before 1.0.5 allows user-assisted remote attackers to cause a denial of… CVSS 2.0MEDIUM 4.3
- TI-2002-00736 bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2005-0953 · CVE Program
- CVE-2005-0953 · NVD
- FIRST EPSS
- GHSA-9fjc-6jmw-8r3m · GitHub Advisory Database · CC BY 4.0
- CVE-2005-0953 · Red Hat security data · CC BY 4.0
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