CVE-2011-3634

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Summary

CVECVE-2011-3634
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-03-01 00:55:04 UTC
Updated2026-04-29 01:13:23 UTC
Descriptionmethods/https.cc in apt before 0.8.11 accepts connections when the certificate host name fails validation and Verify-Host is enabled, which allows man-in-the-middle attackers to obtain repository credentials via unspecified vectors.

Risk And Classification

Primary CVSS: v2.0 2.6 from [email protected]

AV:N/AC:H/Au:N/C:P/I:N/A:N

EPSS: 0.001630000 probability, percentile 0.367780000 (date 2026-05-05)

Problem Types: CWE-200 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:H/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 10.04 - lts All
Operating System Canonical Ubuntu Linux 10.10 All All All
Operating System Canonical Ubuntu Linux 11.04 All All All
Operating System Canonical Ubuntu Linux 8.04 - lts All
Application Debian Advanced Package Tool 0.8.0 All All All
Application Debian Advanced Package Tool 0.8.0 pre1 All All
Application Debian Advanced Package Tool 0.8.0 pre2 All All
Application Debian Advanced Package Tool 0.8.1 All All All
Application Debian Advanced Package Tool 0.8.10 All All All
Application Debian Advanced Package Tool 0.8.10.1 All All All
Application Debian Advanced Package Tool 0.8.10.2 All All All
Application Debian Advanced Package Tool All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-1283-1: APT vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
CVE-2011-3634 in Ubuntu af854a3a-2127-422b-91ae-364da2661108 people.canonical.com
alioth.debian.org/plugins/scmgit/cgi-bin/gitweb.cgi af854a3a-2127-422b-91ae-364da2661108 alioth.debian.org
Bug #868353 “in apt-https Verify-Peer does not fail a connection...” : Bugs : “apt” package : Ubuntu af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net
CONFIRM:https://alioth.debian.org/plugins/scmgit/cgi-bin/gitweb.cgi?p=apt/apt.git;a=blob;f=debian/changelog;hb=HEAD MITRE alioth.debian.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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