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Fencer Intel
medium 6.4

CVE-2011-0002 json

libuser before 0.57 uses a cleartext password value of (1) !! or (2) x for new LDAP user accounts, which makes it easier for remote attacke…

published 2011-01-22 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-0029

cvss
6.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

libuser before 0.57 uses a cleartext password value of (1) !! or (2) x for new LDAP user accounts, which makes it easier for remote attackers to obtain access by specifying one of these values.

Patch / fix

  • libuser Debian 14, Debian 13, Debian 12 1:0.56.9.dfsg.1-1.1

debian advisories DEBIAN-CVE-2011-0002

  • libuser RHEL 4 0.52.5-1.1.el4_8.1
  • libuser RHEL 5 0.54.7-2.1.el5_5.2
  • libuser RHEL 6 0.56.13-4.el6_0.1
  • libuser-python RHEL 6 0.56.13-4.el6_0.1

red hat advisories RHSA-2011:0170

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-0002 updated cvss 4.3

libuser creates LDAP users with a default password

  • Red Hat Enterprise Linux (v. 5 server) libuser 0.54.7-2.1.el5_5.2 Red Hat Enterprise Linux AS version 4 libuser 0.52.5-1.1.el4_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) libuser 0.54.7-2.1.el5_5.2 Red Hat Enterprise Linux Desktop (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Desktop Optional (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Desktop version 4 libuser 0.52.5-1.1.el4_8.1
    +9 more products
    Red Hat Enterprise Linux Desktop Workstation (v. 5 client) libuser 0.54.7-2.1.el5_5.2 Red Hat Enterprise Linux ES version 4 libuser 0.52.5-1.1.el4_8.1 Red Hat Enterprise Linux HPC Node (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Server (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Server Optional (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Workstation (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux Workstation Optional (v. 6) libuser 0.56.13-4.el6_0.1, libuser-python 0.56.13-4.el6_0.1 Red Hat Enterprise Linux WS version 4 libuser 0.52.5-1.1.el4_8.1
    fixed: vendor fix RHSA-2011:0170

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.79% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=643227 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.