CVE-2003-1434: login_ldap 3.1 and 3.2 allows remote attackers to initiate unauthenticated bind requests if (1) bind_anon_dn i

Q: How do I fix CVE-2003-1434?

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

This month

MEDIUM 6.8DOWNGRADE

CVE-2003-1434 is a medium-severity flaw (CVSS 6.8) affecting login ldap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

login_ldap 3.1 and 3.2 allows remote attackers to initiate unauthenticated bind requests if (1) bind_anon_dn is on, which allows a bind with no password provided, (2) bind_anon_cred is on, which allows a bind with no DN, or (3) bind_anon is on, which allows a bind with no DN or password.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-287
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pete werner

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

pete werner login ldap DOWNGRADE

Affected: 3.1 · 3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

apt-cache policy login-ldap || rpm -q login-ldap || login-ldap --version

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison login-ldap sudo apt install login-ldap=<VERSION_BEFORE_3.1> sudo apt-mark hold login-ldap

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

dnf --showduplicates list login-ldap sudo dnf downgrade login-ldap-<VERSION_BEFORE_3.1> sudo dnf versionlock add login-ldap

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-2003-1434?

Is CVE-2003-1434 being exploited?

CVE-2003-1434 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-2003-1434 affect?

CVE-2003-1434 affects login ldap. Severity is medium (CVSS 6.8). login_ldap 3.1 and 3.2 allows remote attackers to initiate unauthenticated bind requests if (1) bind_anon_dn is on, which allows a bind with no password provided, (2) bind_anon_cred is on, which allows a bind with no DN, or (3) bind_anon is

How urgent is CVE-2003-1434?

Priority 40/100. No elevated risk signals yet.

References

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