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Fencer Intel
medium 5.0

CVE-2011-2483 json

crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly…

published 2011-08-25 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2471

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which makes it easier for context-dependent attackers to determine a cleartext password by leveraging knowledge of a password hash.

Patch / fix

  • php php 5.3.7
  • postgresql postgresql 8.2.22, 8.3.16, 8.4.9, 9.0.5
  • openwall crypt_blowfish 1.1
  • libxcrypt Debian 14, Debian 13, Debian 12 1:2.4-1.1

debian advisories DEBIAN-CVE-2011-2483

  • php RHEL 6 5.3.3-3.el6_1.3
  • php53 RHEL 5 5.3.3-1.el5_7.3
  • php-gd RHEL 6 5.3.3-3.el6_1.3
  • php-cli RHEL 6 5.3.3-3.el6_1.3
  • php-dba RHEL 6 5.3.3-3.el6_1.3
  • php-pdo RHEL 6 5.3.3-3.el6_1.3
  • php-xml RHEL 6 5.3.3-3.el6_1.3
  • php-zts RHEL 6 5.3.3-3.el6_1.3

red hat advisories RHSA-2011:1423RHSA-2011:1378RHSA-2011:1377

  • yast2-core openSUSE Tumbleweed 3.2.0-1.1

opensuse advisories openSUSE-SU-2024:10138-1

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-2011-2483 updated cvss 4.3

crypt_blowfish: 8-bit character mishandling allows different password pairs to produce the same hash

  • Red Hat Enterprise Linux (v. 5 server) php53 5.3.3-1.el5_7.3, php53-gd 5.3.3-1.el5_7.3, php53-cli 5.3.3-1.el5_7.3, php53-dba 5.3.3-1.el5_7.3, php53-pdo 5.3.3-1.el5_7.3, php53-xml 5.3.3-1.el5_7.3, +32 more Red Hat Enterprise Linux AS version 4 postgresql 7.4.30-3.el4, postgresql-pl 7.4.30-3.el4, postgresql-tcl 7.4.30-3.el4, postgresql-jdbc 7.4.30-3.el4, postgresql-libs 7.4.30-3.el4, postgresql-test 7.4.30-3.el4, +3 more Red Hat Enterprise Linux Desktop (v. 5 client) postgresql 8.1.23-1.el5_7.2, postgresql84 8.4.9-1.el5_7.1, postgresql-pl 8.1.23-1.el5_7.2, postgresql-tcl 8.1.23-1.el5_7.2, postgresql-libs 8.1.23-1.el5_7.2, postgresql-test 8.1.23-1.el5_7.2, +12 more Red Hat Enterprise Linux Desktop version 4 postgresql 7.4.30-3.el4, postgresql-pl 7.4.30-3.el4, postgresql-tcl 7.4.30-3.el4, postgresql-jdbc 7.4.30-3.el4, postgresql-libs 7.4.30-3.el4, postgresql-test 7.4.30-3.el4, +3 more Red Hat Enterprise Linux ES version 4 postgresql 7.4.30-3.el4, postgresql-pl 7.4.30-3.el4, postgresql-tcl 7.4.30-3.el4, postgresql-jdbc 7.4.30-3.el4, postgresql-libs 7.4.30-3.el4, postgresql-test 7.4.30-3.el4, +3 more Red Hat Enterprise Linux Server (v. 6) php 5.3.3-3.el6_1.3, php-gd 5.3.3-3.el6_1.3, php-cli 5.3.3-3.el6_1.3, php-dba 5.3.3-3.el6_1.3, php-pdo 5.3.3-3.el6_1.3, php-xml 5.3.3-3.el6_1.3, +27 more
    fixed: vendor fix RHSA-2011:1377
  • Red Hat Enterprise Linux Server Optional (v. 6) php 5.3.3-3.el6_1.3, php-gd 5.3.3-3.el6_1.3, php-cli 5.3.3-3.el6_1.3, php-dba 5.3.3-3.el6_1.3, php-pdo 5.3.3-3.el6_1.3, php-xml 5.3.3-3.el6_1.3, +19 more
    fixed: vendor fix RHSA-2011:1423
  • Red Hat Enterprise Linux WS version 4 postgresql 7.4.30-3.el4, postgresql-pl 7.4.30-3.el4, postgresql-tcl 7.4.30-3.el4, postgresql-jdbc 7.4.30-3.el4, postgresql-libs 7.4.30-3.el4, postgresql-test 7.4.30-3.el4, +3 more Red Hat RHEL Desktop Workstation (v. 5 client) php53 5.3.3-1.el5_7.3, php53-gd 5.3.3-1.el5_7.3, php53-cli 5.3.3-1.el5_7.3, php53-dba 5.3.3-1.el5_7.3, php53-pdo 5.3.3-1.el5_7.3, php53-xml 5.3.3-1.el5_7.3, +32 more
    fixed: vendor fix RHSA-2011:1377

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

4.97% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
Technology feeds

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.