CVE-2008-0555
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 1.87% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-287
- Affected
- apache-ssl/apache-ssl
- Source
- cve@mitre.org
References
- http://secunia.com/advisories/29644Vendor Advisory
- http://securityreason.com/securityalert/3797
- http://www.apache-ssl.org/advisory-cve-2008-0555.txtExploit
- http://www.cynops.de/advisories/CVE-2008-0555.txtExploit
- http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txtExploit
- http://www.securityfocus.com/archive/1/490386/100/0/threaded
- http://www.securityfocus.com/bid/28576Patch
- http://www.securitytracker.com/id?1019784
- http://www.vupen.com/english/advisories/2008/1079/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41618
- http://secunia.com/advisories/29644Vendor Advisory
- http://securityreason.com/securityalert/3797
- http://www.apache-ssl.org/advisory-cve-2008-0555.txtExploit
- http://www.cynops.de/advisories/CVE-2008-0555.txtExploit
- http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txtExploit
- http://www.securityfocus.com/archive/1/490386/100/0/threaded
- http://www.securityfocus.com/bid/28576Patch
- http://www.securitytracker.com/id?1019784
- http://www.vupen.com/english/advisories/2008/1079/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41618
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.