CVE-2013-4584: Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STAR

Q: How do I fix CVE-2013-4584?

perdition: upgrade to 2.1; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2013-4584 being exploited?

CVE-2013-4584 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-2013-4584 affect?

CVE-2013-4584 affects perdition, debian linux. Severity is medium (CVSS 5.9). Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STARTTLS IMAP and POP server. ssl_outgoing_ciphers not being applied to STARTTLS connections

Q: How urgent is CVE-2013-4584?

Priority 49/100. Remotely exploitable, no login, no user action; On your watchlist

This month

MEDIUM 5.9REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2013-4584 is a medium-severity flaw (CVSS 5.9) affecting perdition, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STARTTLS IMAP and POP server. ssl_outgoing_ciphers not being applied to STARTTLS connections

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-755
Published	2019-11-15
Last modified	2026-06-16

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

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

Am I affected?

Timeline

2019-11-15 15:15 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

horms perdition UPGRADE

Affected: < 2.1

Fixed in: 2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perdition

Note

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

debian debian linux MITIGATE

Affected: 8.0 · 9.0 · 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

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.

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-2013-4584?

perdition: upgrade to 2.1; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-4584 being exploited?

CVE-2013-4584 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-2013-4584 affect?

CVE-2013-4584 affects perdition, debian linux. Severity is medium (CVSS 5.9). Perdition before 2.2 may have weak security when handling outbound connections, caused by an error in the STARTTLS IMAP and POP server. ssl_outgoing_ciphers not being applied to STARTTLS connections

How urgent is CVE-2013-4584?

Priority 49/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

References

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