CVE-2011-4968
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
02 Description
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
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
- 3.98% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.1% of scored records. A rank, not a probability.
- NVD base score
- 4.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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
- 2019-11-19 15:18Z6 YR AGO
- Last updated
- 2024-08-07 00:23Z2 YR AGO
- Reserved
- 2011-12-23
- 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
- 8893c4f757e3791c07e79c12a5a046684889b66d96f8b1f18dc1c2f5de89f0a0
05 Affected products
06 References
- security-tracker.debian.orghttps://security-tracker.debian.org/tracker/CVE-2011-4968
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4968
- bugzilla.suse.comhttps://bugzilla.suse.com/show_bug.cgi?id=CVE-2011-4968
- access.redhat.comhttps://access.redhat.com/security/cve/cve-2011-4968
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2013/01/03/8
- www.securityfocus.comhttp://www.securityfocus.com/bid/57139
- exchange.xforce.ibmcloud.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/80952
07 Fixed in
Debian 12
- nginx Fixed in 1.9.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- nginx Fixed in 1.9.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- nginx Fixed in 1.9.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- nginx No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.