CVE-2008-2420
The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked
02 Description
The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.36% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 71.4% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2008-05-23 15:00Z18 YR AGO
- Last updated
- 2024-08-07 08:58Z2 YR AGO
- Reserved
- 2008-05-23
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 9fde293626151168cb8a8f4079c73e8df0d79f98514f128f81d6f7c2bbc5394d
05 Affected products
06 References
- secunia.com30425http://secunia.com/advisories/30425
- exchange.xforce.ibmcloud.comstunnel-ocsp-security-bypass(42528)https://exchange.xforce.ibmcloud.com/vulnerabilities/42528
- www.redhat.comFEDORA-2008-4606https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00942.html
- www.vupen.comADV-2008-1569http://www.vupen.com/english/advisories/2008/1569/references
- secunia.com30335http://secunia.com/advisories/30335
- secunia.com31438http://secunia.com/advisories/31438
- www.redhat.comFEDORA-2008-4531https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00856.html
- www.mandriva.comMDVSA-2008:168http://www.mandriva.com/security/advisories?name=MDVSA-2008:168
- stunnel.mirt.net[stunnel-announce] 20080519 stunnel 4.24 releasedhttp://stunnel.mirt.net/pipermail/stunnel-announce/2008-May/000035.html
- www.redhat.comFEDORA-2008-4579https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00907.html
- security.gentoo.orgGLSA-200808-08http://security.gentoo.org/glsa/glsa-200808-08.xml
- www.securityfocus.com29309http://www.securityfocus.com/bid/29309
07 Fixed in
Debian 12
- stunnel4 Fixed in 3:4.22-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- stunnel4 Fixed in 3:4.22-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.