CVE-2001-0834: htsearch CGI program in htdig (ht://Dig) 3.1.5 and earlier allows remote attackers to use the -c option to spe

Q: How do I fix CVE-2001-0834?

htdig: upgrade to newer than 3.1.5; linux: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2001-0834 being exploited?

CVE-2001-0834 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-2001-0834 affect?

CVE-2001-0834 affects htdig, linux, debian linux. Severity is medium (CVSS 6.4). htsearch CGI program in htdig (ht://Dig) 3.1.5 and earlier allows remote attackers to use the -c option to specify an alternate configuration file, which could be used to (1) cause a denial of service (CPU consumption) by specifying a large

Q: How urgent is CVE-2001-0834?

Priority 49/100. On your watchlist

This month

MEDIUM 6.4WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2001-0834 is a medium-severity flaw (CVSS 6.4) affecting htdig, linux, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

htsearch CGI program in htdig (ht://Dig) 3.1.5 and earlier allows remote attackers to use the -c option to specify an alternate configuration file, which could be used to (1) cause a denial of service (CPU consumption) by specifying a large file such as /dev/zero, or (2) read arbitrary files by uploading an alternate configuration file that specifies the target file.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	2.6% (top 14%)
CISA exploited list	No
Published	2001-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: conectiva · debian · htdig · suse

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

Am I affected?

Timeline

2001-12-06 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

htdig htdig UPGRADE

Affected: <= 3.1.5

Fixed in: newer than 3.1.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.1.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade htdig

Note

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

conectiva linux MITIGATE

Affected: 5.0 · 5.1 · 6.0 · 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0

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.

debian debian linux MITIGATE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

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.

suse suse linux MITIGATE

Affected: 6.3 · 6.4 · 7.0 · 7.1 · 7.2 · 7.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.3

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-2001-0834?

htdig: upgrade to newer than 3.1.5; linux: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0834 being exploited?

CVE-2001-0834 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-2001-0834 affect?

CVE-2001-0834 affects htdig, linux, debian linux. Severity is medium (CVSS 6.4). htsearch CGI program in htdig (ht://Dig) 3.1.5 and earlier allows remote attackers to use the -c option to specify an alternate configuration file, which could be used to (1) cause a denial of service (CPU consumption) by specifying a large

How urgent is CVE-2001-0834?

Priority 49/100. On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2007-6110 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in htsearch in htdig 3.2.0b6 allows remote attackers to inject arbitr
CVE-2005-0085 MEDIUM 6.8 DOWNGRADE MITIGATE Cross-site scripting (XSS) vulnerability in ht://dig (htdig) before 3.1.6-r7 allows remote attackers to execut
CVE-2002-2010 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in htsearch.cgi in htdig (ht://Dig) 3.1.5, 3.1.6, and 3.2 allows remo
CVE-2000-1191 MEDIUM 5.0 UPGRADE htsearch program in htDig 3.2 beta, 3.1.6, 3.1.5, and earlier allows remote attackers to determine the physica

References

← Back to latest CVEs