CVE-2011-2483

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.

Published: 2011-08-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-2483 is rated Moderate Risk (49.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 4.97%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-2483

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 7.07% 4.97% -2.10%
2 2026-05-24 6.50% 7.07% +0.57%
3 2026-03-05 — 6.50% —

Full EPSS history (58 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-2483

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-2483

OS Trackers for CVE-2011-2483

vendor priority summary link
debian unimportant CVE-2011-2483 unimportant priority: Debian including 2 source packages (libcrypt-eksblowfish-perl, libxcrypt), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2011-2483
gentoo normal CVE-2011-2483: 2 GLSA(s) (201110-06, 201110-22), 4 atom(s) (dev-db/postgresql, dev-db/postgresql-base, dev-db/postgresql-server, dev-lang/php); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-2483
redhat medium — https://access.redhat.com/security/cve/CVE-2011-2483
suse medium CVE-2011-2483 severity moderate: SUSE including 113 source package names (glibc-2.11.1-0.32.1, glibc-2.11.3-17.31.1, …), 164 product×package rows across 34 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (34 product lines)): Fixed 164. https://www.suse.com/security/cve/CVE-2011-2483/
ubuntu medium CVE-2011-2483 medium priority: Ubuntu including 7 source packages (john, libcrypt-eksblowfish-perl, …), 91 status rows across 13 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid): DNE 38, not-affected 32, released 10, ignored 6, needs-triage 3, pending 2. https://ubuntu.com/security/CVE-2011-2483

Affected software / configurations for CVE-2011-2483

Vendor Product Version Raw CPE
php php < 5.3.7 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
postgresql postgresql >= 8.2.0, < 8.2.22 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 8.3.0, < 8.3.16 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 8.4.0, < 8.4.9 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 9.0.0, < 9.0.5 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
openwall crypt_blowfish < 1.1 cpe:2.3:a:openwall:crypt_blowfish:*:*:*:*:*:*:*:*

References for CVE-2011-2483

URL Tags
http://freshmeat.net/projects/crypt_blowfish Broken Link
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 Third Party Advisory
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00015.html Third Party Advisory
http://php.net/security/crypt_blowfish Third Party Advisory
http://support.apple.com/kb/HT5130 Third Party Advisory
http://www.debian.org/security/2011/dsa-2340 Third Party Advisory VDB Entry
http://www.debian.org/security/2012/dsa-2399 Third Party Advisory VDB Entry
http://www.mandriva.com/security/advisories?name=MDVSA-2011:165 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2011:178 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2011:179 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2011:180 Broken Link
http://www.openwall.com/crypt/ Mailing List Patch Third Party Advisory
http://www.php.net/ChangeLog-5.php#5.3.7 Third Party Advisory
http://www.php.net/archive/2011.php#id2011-08-18-1 Patch Vendor Advisory
http://www.postgresql.org/docs/8.4/static/release-8-4-9.html Patch Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2011-1377.html Broken Link
http://www.redhat.com/support/errata/RHSA-2011-1378.html Broken Link
http://www.redhat.com/support/errata/RHSA-2011-1423.html Broken Link
http://www.securityfocus.com/bid/49241 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-1229-1 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/69319 Third Party Advisory VDB Entry
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