CVE-2005-1087: CRLF injection vulnerability in the cmdIS.DLL plugin for AN HTTPD Server 1.42n allows remote attackers to spoo

This month

MEDIUM 6.4DOWNGRADE

CVE-2005-1087 is a medium-severity flaw (CVSS 6.4) affecting an-httpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CRLF injection vulnerability in the cmdIS.DLL plugin for AN HTTPD Server 1.42n allows remote attackers to spoof or hide entries in the logfile, and possibly read files using an injected type command, via CRLF sequences in an HTTP request.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2005-04-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: an

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

Am I affected?

Timeline

2005-04-07 04:00 UTCPublished CVE record published
2026-06-16 22:12 UTCUpdated Record last modified

an an-httpd DOWNGRADE

Affected: 1.42n

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.42n

1. Check installed version

apt-cache policy an-httpd || rpm -q an-httpd || an-httpd --version

2. No fixed release: DOWNGRADE to a release before 1.42n (Debian / Ubuntu)

apt-cache madison an-httpd sudo apt install an-httpd=<VERSION_BEFORE_1.42n> sudo apt-mark hold an-httpd

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

dnf --showduplicates list an-httpd sudo dnf downgrade an-httpd-<VERSION_BEFORE_1.42n> sudo dnf versionlock add an-httpd

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: AN HTTPD 1.42 - Arbitrary Log Content Injection

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-2005-1087?

an-httpd: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-1087 being exploited?

CVE-2005-1087 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-2005-1087 affect?

CVE-2005-1087 affects an-httpd. Severity is medium (CVSS 6.4). CRLF injection vulnerability in the cmdIS.DLL plugin for AN HTTPD Server 1.42n allows remote attackers to spoof or hide entries in the logfile, and possibly read files using an injected type command, via CRLF sequences in an HTTP request.

How urgent is CVE-2005-1087?

Priority 48/100. Public exploit reference

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2006-1598 HIGH 7.8 UPGRADE AN HTTPD 1.42n, and possibly other versions before 1.42p, allows remote attackers to obtain source code of scr
CVE-2005-1086 MEDIUM 6.4 DOWNGRADE Buffer overflow in the cmdIS.DLL plugin for AN HTTPD Server 1.42n allows remote attackers to execute arbitrary
CVE-2002-1930 HIGH 7.5 DOWNGRADE Buffer overflow in AN HTTPd 1.38 through 1.4.1c allows remote attackers to execute arbitrary code via a SOCKS4

References

← Back to latest CVEs