Medium 6.5Published Feb 2, 2010

CVE-2010-0442The bitsubstr function in backend/utils/adt/varbit.c in PostgreSQL 8.0.23, 8.1.11, and 8.3.8 allows remote authenticated users to cause a denial of service (daemon crash) or have unspecified other im…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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The bitsubstr function in backend/utils/adt/varbit.c in PostgreSQL 8.0.23, 8.1.11, and 8.3.8 allows remote authenticated users to cause a denial of service (daemon crash) or have unspecified other impact via vectors involving a negative integer in the third argument, as demonstrated by a SELECT statement that contains a call to the substring function for a bit string, related to an "overflow."

CVSS: 6.5 MEDIUM (v2.0, NVD)AV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness (CWE): CWE-189
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

postgresql postgresql postgresql:postgresql	from 7.4 before 7.4.28; from 8.0 before 8.0.24; from 8.1 before 8.1.20; from 8.2 before 8.2.16; from 8.3 before 8.3.10; from 8.4 before 8.4.3	NVD

References

References

http://archives.postgresql.org/pgsql-committers/2010-01/msg00125.php	vendor-advisory
http://archives.postgresql.org/pgsql-hackers/2010-01/msg00634.php	vendor-advisory
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=567058	third-party-advisory
http://git.postgresql.org/gitweb?p=postgresql.git%3Ba=commit%3Bh=75dea10196c31d98d98c0bafeeb576ae99c09b12	vendor-advisory
http://git.postgresql.org/gitweb?p=postgresql.git%3Ba=commit%3Bh=b15087cb39ca9e4bde3c8920fcee3741045d2b83	vendor-advisory
http://intevydis.blogspot.com/2010/01/postgresql-8023-bitsubstr-overflow.html	third-party-advisory
http://secunia.com/advisories/39566	broken-link
http://secunia.com/advisories/39820	broken-link
http://secunia.com/advisories/39939	broken-link
http://securitytracker.com/id?1023510	third-party-advisory, vdb-entry
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The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.