CVE-2015-1848: The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not set the secure flag for a cookie in an https session

Q: How do I fix CVE-2015-1848?

pacemaker configuration system: upgrade to newer than 0.9.137; enterprise linux high availability: mitigate or apply the listed mitigation; enterprise linux high availability eus: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2015-1848 being exploited?

CVE-2015-1848 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-1848 affect?

CVE-2015-1848 affects pacemaker configuration system, enterprise linux high availability, enterprise linux high availability eus. Severity is medium (CVSS 6.8). The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session. NOTE

Q: How urgent is CVE-2015-1848?

Priority 55/100. Public exploit reference; On your watchlist

This month

MEDIUM 6.8WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2015-1848 is a medium-severity flaw (CVSS 6.8) affecting pacemaker configuration system, enterprise linux high availability, enterprise linux high availability eus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session. NOTE: this issue was SPLIT per ADT2 due to different vulnerability types. CVE-2015-3983 is for the issue with not setting the HTTPOnly flag.

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-310
Published	2015-05-14
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: fedora · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-05-14 14:59 UTCPublished CVE record published
2026-06-17 00:23 UTCUpdated Record last modified

fedora pacemaker configuration system UPGRADE

Affected: <= 0.9.137

Fixed in: newer than 0.9.137

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pacemaker-configuration-system || rpm -q pacemaker-configuration-system || pacemaker-configuration-system --version

2. UPGRADE to newer than 0.9.137 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pacemaker-configuration-system

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pacemaker-configuration-system

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

redhat enterprise linux high availability MITIGATE

Affected: 6.0 · 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux high availability eus MITIGATE

Affected: 6.6.z · 7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.6.z

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux resilient storage MITIGATE

Affected: 6.0 · 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux resilient storage eus MITIGATE

Affected: 6.6.z · 7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.6.z

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-1848?

pacemaker configuration system: upgrade to newer than 0.9.137; enterprise linux high availability: mitigate or apply the listed mitigation; enterprise linux high availability eus: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-1848 being exploited?

CVE-2015-1848 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-1848 affect?

CVE-2015-1848 affects pacemaker configuration system, enterprise linux high availability, enterprise linux high availability eus. Severity is medium (CVSS 6.8). The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session. NOTE

How urgent is CVE-2015-1848?

Priority 55/100. Public exploit reference; On your watchlist

Related CVEs

CVE-2015-3983 MEDIUM 4.3 UPGRADE The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not include the HTTPOnly flag in a Set-Cookie header, wh

References

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