CVE-2005-0036: The DNS implementation in DeleGate 8.10.2 and earlier allows remote attackers to cause a denial of service via

Routine

MEDIUM 5.0UPGRADEDOWNGRADE

CVE-2005-0036 is a medium-severity flaw (CVSS 5.0) affecting delegate, delegate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The DNS implementation in DeleGate 8.10.2 and earlier allows remote attackers to cause a denial of service via a compressed DNS packet with a label length byte with an incorrect offset, which could trigger an infinite loop.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Published	2005-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: delegate · etl

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

Am I affected?

Timeline

2005-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

delegate delegate UPGRADE

Affected: <= 8.10.2 · 5.9.3 · 7.7.0 · 7.7.1 · 7.8.0 · 7.8.1 · 7.8.2 · 7.9.11

Fixed in: newer than 8.10.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 8.10.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade delegate

Note

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

etl delegate DOWNGRADE

Affected: 5.9 · 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.9 (Debian / Ubuntu)

apt-cache madison delegate sudo apt install delegate=<VERSION_BEFORE_5.9> sudo apt-mark hold delegate

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

dnf --showduplicates list delegate sudo dnf downgrade delegate-<VERSION_BEFORE_5.9> sudo dnf versionlock add delegate

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.

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-2005-0036?

delegate: upgrade to newer than 8.10.2; delegate: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-0036 being exploited?

CVE-2005-0036 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-2005-0036 affect?

CVE-2005-0036 affects delegate, delegate. Severity is medium (CVSS 5.0). The DNS implementation in DeleGate 8.10.2 and earlier allows remote attackers to cause a denial of service via a compressed DNS packet with a label length byte with an incorrect offset, which could trigger an infinite loop.

How urgent is CVE-2005-0036?

Priority 39/100. No elevated risk signals yet.

Related CVEs

CVE-2015-7556 HIGH 7.8 DOWNGRADE DeleGate 9.9.13 allows local users to gain privileges as demonstrated by the dgcpnod setuid program.
CVE-2006-2072 MEDIUM 5.0 DOWNGRADE Multiple unspecified vulnerabilities in DeleGate 9.x before 9.0.6 and 8.x before 8.11.6 allow remote attackers
CVE-2005-0861 HIGH 7.5 UPGRADE Multiple buffer overflows in DeleGate before 8.11.1 may allow attackers to cause a denial of service or execut
CVE-2004-2003 HIGH 7.5 DOWNGRADE Buffer overflow in the ssl_prcert function in the SSLway filter (sslway.c) for DeleGate 8.9.2 and earlier allo
CVE-2004-0789 MEDIUM 5.0 DOWNGRADE DOWNGRADE Multiple implementations of the DNS protocol, including (1) Poslib 1.0.2-1 and earlier as used by Posadis, (2)

References

← Back to latest CVEs