CVE-2013-4479: lib/sup/message_chunks.rb in Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute

Q: How do I fix CVE-2013-4479?

sup: upgrade to newer than 0.13.2. Exact commands for each OS are on this page.

Q: Is CVE-2013-4479 being exploited?

CVE-2013-4479 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-2013-4479 affect?

CVE-2013-4479 affects sup. Severity is medium (CVSS 6.8). lib/sup/message_chunks.rb in Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the content_type of an email attachment.

Q: How urgent is CVE-2013-4479?

Priority 51/100. Public exploit reference

This month

MEDIUM 6.8UPGRADE

CVE-2013-4479 is a medium-severity flaw (CVSS 6.8) affecting sup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lib/sup/message_chunks.rb in Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the content_type of an email attachment.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-94
Published	2013-12-07
Last modified	2026-06-16

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

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-12-07 20:55 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

supmua sup UPGRADE

Affected: <= 0.13.2 · 0.13.0 · 0.13.1 · 0.14.0 · 0.14.1

Fixed in: newer than 0.13.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sup || rpm -q sup || sup --version

2. UPGRADE to newer than 0.13.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sup

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sup

Note

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

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-2013-4479?

sup: upgrade to newer than 0.13.2. Exact commands for each OS are on this page.

Is CVE-2013-4479 being exploited?

CVE-2013-4479 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-2013-4479 affect?

CVE-2013-4479 affects sup. Severity is medium (CVSS 6.8). lib/sup/message_chunks.rb in Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the content_type of an email attachment.

How urgent is CVE-2013-4479?

Priority 51/100. Public exploit reference

Related CVEs

CVE-2013-4478 MEDIUM 6.8 UPGRADE Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute arbitrary commands via shell

References

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