CVE-2011-4967

tog-Pegasus has a package hash collision DoS vulnerability

Published: 2019-11-19 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4967 is rated Moderate Risk (61.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.65%). EPSS rose +1.99% over the last day, indicating growing attacker interest. 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-2011-4967

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 2026-06-15 0.66% 2.65% +1.99%
2 2025-04-02 2.66% 0.66% -2.00%
3 2025-03-30 — 2.66% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4967

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4967

OS Trackers for CVE-2011-4967

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2011-4967

Affected software / configurations for CVE-2011-4967

Vendor Product Version Raw CPE
openpegasus tog-pegasus < 2.12 cpe:2.3:a:openpegasus:tog-pegasus:*:*:*:*:*:*:*:*
redhat enterprise_linux 4.0 cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
redhat enterprise_linux 5.0 cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
redhat enterprise_linux 6.0 cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

References for CVE-2011-4967

URL Tags
http://bugzilla.openpegasus.org/show_bug.cgi?id=9182 Issue Tracking Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2012/12/14/2 Mailing List Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4967 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4967 Issue Tracking Third Party Advisory
https://www.securityfocus.com/bid/56941 Third Party Advisory VDB Entry
cvelogic Threat Intelligence