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Vulnerability record · CVE-2009-4355 · published 14 January 2010

CVE-2009-4355: Openssl vulnerability

OOpenssl · Openssl

Memory leak in the zlib_stateful_finish function in crypto/comp/c_zlib.c in OpenSSL 0.9.8l and earlier and 1.0.0 Beta through Beta 4 allows remote attackers to cause a denial of service (memory consumption) via vectors that trigger incorrect calls to the CRYPTO_cleanup_all_ex_data function, as demonstrated by use of SSLv3 and PHP with the Apache HTTP Server, a related issue to CVE-2008-1678.

5.0 CVSS 2.0 Medium EPSS 9.2% · top 4.8% CWE-399 · CWE-399
5.0CVSS 2.0 base score
9.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
60References
16 Jun 2026Last modified by NVD

Description

Memory leak in the zlib_stateful_finish function in crypto/comp/c_zlib.c in OpenSSL 0.9.8l and earlier and 1.0.0 Beta through Beta 4 allows remote attackers to cause a denial of service (memory consumption) via vectors that trigger incorrect calls to the CRYPTO_cleanup_all_ex_data function, as demonstrated by use of SSLv3 and PHP with the Apache HTTP Server, a related issue to CVE-2008-1678.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cvs.openssl.org/chngview?cn=19068
http://cvs.openssl.org/chngview?cn=19069
http://cvs.openssl.org/chngview?cn=19167
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00009.html
http://marc.info/?l=bugtraq&m=127128920008563&w=2
http://secunia.com/advisories/38175 Vendor Advisory
http://secunia.com/advisories/38181 Vendor Advisory
http://secunia.com/advisories/38200 Vendor Advisory
http://secunia.com/advisories/38761
http://secunia.com/advisories/39461
http://secunia.com/advisories/42724
http://secunia.com/advisories/42733
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.663049
http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0004
http://www.debian.org/security/2010/dsa-1970
http://www.mandriva.com/security/advisories?name=MDVSA-2010:022
http://www.openwall.com/lists/oss-security/2010/01/13/3
http://www.ubuntu.com/usn/USN-884-1 Vendor Advisory
http://www.vupen.com/english/advisories/2010/0124 Vendor Advisory
http://www.vupen.com/english/advisories/2010/0839
http://www.vupen.com/english/advisories/2010/0916
https://bugzilla.redhat.com/show_bug.cgi?id=546707
https://issues.rpath.com/browse/RPL-3157
https://kb.bluecoat.com/index?page=content&id=SA50
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11260
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12168
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6678
https://rhn.redhat.com/errata/RHSA-2010-0095.html
http://cvs.openssl.org/chngview?cn=19068
http://cvs.openssl.org/chngview?cn=19069
http://cvs.openssl.org/chngview?cn=19167
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00009.html
http://marc.info/?l=bugtraq&m=127128920008563&w=2
http://secunia.com/advisories/38175 Vendor Advisory
http://secunia.com/advisories/38181 Vendor Advisory
http://secunia.com/advisories/38200 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-4355), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.