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CVE-2011-2483

22
FAUCET Score

CVE-2011-2483 describes a vulnerability in crypt_blowfish before version 1.1, affecting products like PHP before 5.3.7 and PostgreSQL before 8.4.9, where improper handling of 8-bit characters can facilitate the determination of cleartext passwords from their hashes. This vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low complexity, and potential for partial confidentiality impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.3.7CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 8.2.0, < 8.2.22CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 8.3.0, < 8.3.16CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 8.4.0, < 8.4.9CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 9.0.0, < 9.0.5CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.97%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0497 is in the 88th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: postgresql-0:7.4.30-3.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: postgresql-0:8.1.23-1.el5_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: postgresql84-0:8.4.9-1.el5_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53-0:5.3.3-1.el5_7.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: postgresql-0:8.4.9-1.el6_1.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php-0:5.3.3-3.el6_1.3
View patch

Vendor Advisories (1)

redhatCVE-2011-2483Moderate

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

Jun 20, 2011

References

freshmeat.net / projects/crypt_blowfish
Broken Link
kb.juniper.net / InfoCenter/index
Third Party Advisory
lists.apple.com / archives/security-announce/2012/Feb/msg00000.html
Mailing List
lists.opensuse.org / opensuse-security-announce/2011-08/msg00015.html
Third Party Advisory
php.net / security/crypt_blowfish
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/69319
Third Party AdvisoryVDB Entry
support.apple.com / kb/HT5130
Third Party Advisory
debian.org / security/2011/dsa-2340
Third Party AdvisoryVDB Entry
debian.org / security/2012/dsa-2399
Third Party AdvisoryVDB Entry
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
openwall.com / crypt
Mailing ListPatchThird Party Advisory
php.net / archive/2011.php
PatchVendor Advisory
php.net / ChangeLog-5.php
Third Party Advisory
postgresql.org / docs/8.4/static/release-8-4-9.html
PatchVendor Advisory
redhat.com / support/errata/RHSA-2011-1377.html
Broken Link
redhat.com / support/errata/RHSA-2011-1378.html
Broken Link
redhat.com / support/errata/RHSA-2011-1423.html
Broken Link
securityfocus.com / bid/49241
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-1229-1
Third Party Advisory