CVE-2013-6422
The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name
02 Description
The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name
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
- 2.79% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.2% 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 2026-06-17.
- Red Hat severity
- Low. 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
- 2013-12-23 22:00Z12 YR AGO
- Last updated
- 2024-08-06 17:39Z2 YR AGO
- Reserved
- 2013-11-04
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 309d1d2b49191ea0ab588fb7d6294250946b9927dd4e18c9291c409c5854bfb5
05 Affected products
06 References
- curl.haxx.sehttp://curl.haxx.se/docs/adv_20131217.html
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- h20564.www2.hp.comHPSBMU03112https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322
- www.debian.orgDSA-2824http://www.debian.org/security/2013/dsa-2824
- www.ubuntu.comUSN-2058-1http://www.ubuntu.com/usn/USN-2058-1
07 Fixed in
Debian 12
- curl Fixed in 7.34.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 7.34.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 7.34.0-1
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.