CVE-2011-5268

connection.c in Bip before 0.8.9 does not properly close sockets, which allows remote attackers to cause a denial of service (file descriptor consumption and crash) via multiple failed SSL handshakes, a different vulnerability than CVE-2013-4550. NOTE: this issue was SPLIT from CVE-2013-4550 because it is a different type of issue.

Published: 2013-12-24 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5268 is rated Moderate Risk (42.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.86%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-5268

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 1.23% 0.86% -0.37%
2 2025-03-29 0.86% 1.23% +0.37%
3 2025-03-22 — 0.86% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5268

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-5268

OS Trackers for CVE-2011-5268

vendor priority summary link
debian not yet assigned CVE-2011-5268 not yet assigned priority: Debian including 1 source packages (bip), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-5268
ubuntu medium CVE-2011-5268 medium priority: Ubuntu including 1 source packages (bip), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 6, ignored 5, DNE 1, released 1. https://ubuntu.com/security/CVE-2011-5268

Affected software / configurations for CVE-2011-5268

Vendor Product Version Raw CPE
duckcorp bip <= 0.8.8 cpe:2.3:a:duckcorp:bip:*:*:*:*:*:*:*:*
duckcorp bip 0.8.0 cpe:2.3:a:duckcorp:bip:0.8.0:*:*:*:*:*:*:*
duckcorp bip 0.8.0 cpe:2.3:a:duckcorp:bip:0.8.0:rc0:*:*:*:*:*:*
duckcorp bip 0.8.0 cpe:2.3:a:duckcorp:bip:0.8.0:rc1:*:*:*:*:*:*
duckcorp bip 0.8.1 cpe:2.3:a:duckcorp:bip:0.8.1:*:*:*:*:*:*:*
duckcorp bip 0.8.2 cpe:2.3:a:duckcorp:bip:0.8.2:*:*:*:*:*:*:*
duckcorp bip 0.8.3 cpe:2.3:a:duckcorp:bip:0.8.3:*:*:*:*:*:*:*
duckcorp bip 0.8.4 cpe:2.3:a:duckcorp:bip:0.8.4:*:*:*:*:*:*:*
duckcorp bip 0.8.5 cpe:2.3:a:duckcorp:bip:0.8.5:*:*:*:*:*:*:*
duckcorp bip 0.8.6 cpe:2.3:a:duckcorp:bip:0.8.6:*:*:*:*:*:*:*
duckcorp bip 0.8.7 cpe:2.3:a:duckcorp:bip:0.8.7:*:*:*:*:*:*:*
fedoraproject fedora 18 cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*
fedoraproject fedora 19 cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*

References for CVE-2011-5268

cvelogic Threat Intelligence