The ExpandCert function in Apache-SSL before apache_1.3.41+ssl_1.59 does not properly handle (1) '/' and (2) '=' characters in a Distinguished Name (DN) in a client certificate, which might allow remote attackers to bypass authentication via a crafted DN that triggers overwriting of environment variables
Published Apr 4, 2008
7.5
HIGHCVSS 2.0
EPSS 1.87%
Description
The ExpandCert function in Apache-SSL before apache_1.3.41+ssl_1.59 does not properly handle (1) '/' and (2) '=' characters in a Distinguished Name (DN) in a client certificate, which might allow remote attackers to bypass authentication via a crafted DN that triggers overwriting of environment variables.
Affected products
No data.
- 1.3.34_1.57
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:P/I:P/A:P
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.87% (0.01870) | 78.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.87% (0.01870) | 76.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.52% (0.00524) | 65.02th | v4 (v2025.03.14) |
| Mar 16, 2025 | 11.18% (0.11181) | 95.30th | v3 (v2023.03.01) |
| Feb 6, 2025 | 2.59% (0.02586) | 90.11th | v3 (v2023.03.01) |
| Dec 30, 2024 | 1.35% (0.01351) | 85.85th | v3 (v2023.03.01) |
| Dec 17, 2024 | 2.37% (0.02367) | 89.51th | v3 (v2023.03.01) |
| Dec 12, 2024 | 1.28% (0.01278) | 86.30th | v3 (v2023.03.01) |
| May 17, 2024 | 1.20% (0.01204) | 85.13th | v3 (v2023.03.01) |
| Apr 10, 2024 | 1.21% (0.01211) | 85.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.12% (0.01120) | 82.36th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (10)
- http://secunia.com/advisories/29644 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securityreason.com/securityalert/3797 third-party-advisoryx_refsource_SREASON
- http://www.apache-ssl.org/advisory-cve-2008-0555.txt x_refsource_MISCExploit
- http://www.cynops.de/advisories/CVE-2008-0555.txt x_refsource_MISCExploit
- http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txt x_refsource_MISCExploit
- http://www.securityfocus.com/archive/1/490386/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/28576 vdb-entryx_refsource_BIDPatch
- http://www.securitytracker.com/id?1019784 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2008/1079/references vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41618 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/29644 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securityreason.com/securityalert/3797 | third-party-advisoryx_refsource_SREASON | |
| http://www.apache-ssl.org/advisory-cve-2008-0555.txt | x_refsource_MISCExploit | |
| http://www.cynops.de/advisories/CVE-2008-0555.txt | x_refsource_MISCExploit | |
| http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txt | x_refsource_MISCExploit | |
| http://www.securityfocus.com/archive/1/490386/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/28576 | vdb-entryx_refsource_BIDPatch | |
| http://www.securitytracker.com/id?1019784 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2008/1079/references | vdb-entryx_refsource_VUPEN | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/41618 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.