CVE-2007-6341: Net/DNS/RR/A.pm in Net::DNS 0.60 build 654, as used in packages such as SpamAssassin and OTRS, allows remote a

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MEDIUM 5.0DOWNGRADE

CVE-2007-6341 is a medium-severity flaw (CVSS 5.0) affecting net dns. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Net/DNS/RR/A.pm in Net::DNS 0.60 build 654, as used in packages such as SpamAssassin and OTRS, allows remote attackers to cause a denial of service (program "croak") via a crafted DNS response.

Why this priority

EPSS top 5%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	9.5% (top 5%)
CISA exploited list	No
Weakness	CWE-119
Published	2007-12-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: net dns

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

Am I affected?

Timeline

2007-12-20 23:46 UTCPublished CVE record published
2026-06-16 22:47 UTCUpdated Record last modified

net dns net dns DOWNGRADE

Affected: 0.60 build_654

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.60

1. Check installed version

apt-cache policy net-dns || rpm -q net-dns || net-dns --version

2. No fixed release: DOWNGRADE to a release before 0.60 (Debian / Ubuntu)

apt-cache madison net-dns sudo apt install net-dns=<VERSION_BEFORE_0.60> sudo apt-mark hold net-dns

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list net-dns sudo dnf downgrade net-dns-<VERSION_BEFORE_0.60> sudo dnf versionlock add net-dns

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Perl Net::DNS 0.48/0.59/0.60 - DNS Response Remote Denial of Service

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-2007-6341?

net dns: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-6341 being exploited?

CVE-2007-6341 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-2007-6341 affect?

CVE-2007-6341 affects net dns. Severity is medium (CVSS 5.0). Net/DNS/RR/A.pm in Net::DNS 0.60 build 654, as used in packages such as SpamAssassin and OTRS, allows remote attackers to cause a denial of service (program "croak") via a crafted DNS response.

How urgent is CVE-2007-6341?

Priority 46/100. EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

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CVE-2006-5521 HIGH 7.5 UPGRADE PHP remote file inclusion vulnerability in DNS/RR.php in Net_DNS 0.03 and earlier allows remote attackers to e

References

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