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Vulnerability record · CVE-2010-4180 · published 6 December 2010

CVE-2010-4180: Openssl vulnerability

OOpenssl · Openssl

OpenSSL before 0.9.8q, and 1.0.x before 1.0.0c, when SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG is enabled, does not properly prevent modification of the ciphersuite in the session cache, which allows remote attackers to force the downgrade to an unintended cipher via vectors involving sniffing network traffic to discover a session identifier.

4.3 CVSS 2.0 Medium EPSS 9.5% · top 4.7%
4.3CVSS 2.0 base score
9.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
100References
16 Jun 2026Last modified by NVD

Description

OpenSSL before 0.9.8q, and 1.0.x before 1.0.0c, when SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG is enabled, does not properly prevent modification of the ciphersuite in the session cache, which allows remote attackers to force the downgrade to an unintended cipher via vectors involving sniffing network traffic to discover a session identifier.

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

Affected products

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

References

LinkTags
http://cvs.openssl.org/chngview?cn=20131 Broken LinkPatch
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777 Broken Link
http://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html Broken LinkMailing ListThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052027.html Mailing ListThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052315.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=129916880600544&w=2 Issue TrackingThird Party Advisory
http://marc.info/?l=bugtraq&m=130497251507577&w=2 Issue TrackingThird Party Advisory
http://marc.info/?l=bugtraq&m=132077688910227&w=2 Issue TrackingThird Party Advisory
http://openssl.org/news/secadv_20101202.txt PatchThird Party Advisory
http://osvdb.org/69565 Broken Link
http://secunia.com/advisories/42469 Not Applicable
http://secunia.com/advisories/42473 Not Applicable
http://secunia.com/advisories/42493 Not Applicable
http://secunia.com/advisories/42571 Not Applicable
http://secunia.com/advisories/42620 Not Applicable
http://secunia.com/advisories/42811 Not Applicable
http://secunia.com/advisories/42877 Not Applicable
http://secunia.com/advisories/43169 Not Applicable
http://secunia.com/advisories/43170 Not Applicable
http://secunia.com/advisories/43171 Not Applicable
http://secunia.com/advisories/43172 Not Applicable
http://secunia.com/advisories/43173 Not Applicable
http://secunia.com/advisories/44269 Not Applicable
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.668471 Third Party Advisory
http://support.apple.com/kb/HT4723 Third Party Advisory
http://ubuntu.com/usn/usn-1029-1 Third Party Advisory
http://www.debian.org/security/2011/dsa-2141 Third Party Advisory
http://www.kb.cert.org/vuls/id/737740 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2010:248 Permissions Required
http://www.redhat.com/support/errata/RHSA-2010-0977.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0978.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2010-0979.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0896.html Vendor Advisory
http://www.securityfocus.com/archive/1/522176 Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/45164 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1024822 Broken LinkThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2010-4180), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.