bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not use the O_EXCL flag to create files during decompression and does not warn the user if an existing file would be overwritten, which could allow attackers to overwrite files via a bzip2 archive
Published Apr 2, 2003
5.0
MEDIUMCVSS 2.0
EPSS 1.35%
Description
bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not use the O_EXCL flag to create files during decompression and does not warn the user if an existing file would be overwritten, which could allow attackers to overwrite files via a bzip2 archive.
Affected products
No data.
- 0.9.0
- 0.9.0a
- 0.9.0b
- 0.9.0c
- 0.9.5a
- 0.9.5b
- 0.9.5c
- 0.9.5d
- 1.0
- 1.0.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.35% (0.01348) | 70.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.35% (0.01348) | 67.72th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.47% (0.00472) | 62.61th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00155) | 53.20th | v3 (v2023.03.01) |
| Sep 11, 2023 | 0.15% (0.00155) | 51.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00174) | 52.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
No CWE recorded.
References (4)
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-039.0.txt vendor-advisoryx_refsource_CALDERA
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:25.bzip2.asc vendor-advisoryx_refsource_FREEBSDPatchVendor Advisory
- http://www.iss.net/security_center/static/9126.php vdb-entryx_refsource_XFPatchVendor Advisory
- http://www.securityfocus.com/bid/4774 vdb-entryx_refsource_BIDPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-039.0.txt | vendor-advisoryx_refsource_CALDERA | |
| ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:25.bzip2.asc | vendor-advisoryx_refsource_FREEBSDPatchVendor Advisory | |
| http://www.iss.net/security_center/static/9126.php | vdb-entryx_refsource_XFPatchVendor Advisory | |
| http://www.securityfocus.com/bid/4774 | vdb-entryx_refsource_BIDPatchVendor Advisory |
Change history (0)
No recorded changes yet.