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CVE-2015-3983

14
FAUCET Score

CVE-2015-3983 describes a vulnerability in the pcs daemon (pcsd) of PCS versions 0.9.137 and earlier, impacting Fedora Pacemaker Configuration System. The vulnerability stems from the absence of the HTTPOnly flag in Set-Cookie headers, which could allow remote attackers to access potentially sensitive cookie information via client-side scripts. With a CVSS score of 4.3 (medium severity), this issue has a network attack vector and medium attack complexity, potentially leading to information disclosure (C:P). There is no evidence of active exploitation, nor are there known public exploits or Metasploit modules available. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.137CPE matchmatch criteria
cpe:2.3:a:fedora:pacemaker_configuration_system:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.10%
Probability of exploitation in next 30 days
EPSS Percentile
79.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0210 is in the 66th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pcs-0:0.9.123-9.el6_6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: pcs-0:0.9.137-13.el7_1.2
View patch

Vendor Advisories (1)

redhatCVE-2015-3983Important

pcs: improper web session variable signing

May 12, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-June/159374.html
lists.fedoraproject.org / pipermail/package-announce/2015-June/159401.html
lists.fedoraproject.org / pipermail/package-announce/2015-June/159412.html
rhn.redhat.com / errata/RHSA-2015-0980.html
rhn.redhat.com / errata/RHSA-2015-0990.html
bugzilla.redhat.com / attachment.cgi
securityfocus.com / bid/74682