CVE-2008-1948

Public Exploit

Description

The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly calculate the number of Server Names in a TLS 1.0 Client Hello message during extension handling, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a zero value for the length of Server Names, which leads to a buffer overflow in session resumption data in the pack_security_parameters function, aka GNUTLS-SA-2008-1-1.

Category

10.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 23.88% Top 5%
Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory mandriva.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/30331 third party advisory
http://secunia.com/advisories/31939 third party advisory
http://www.ubuntu.com/usn/usn-613-1 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html vendor advisory
http://www.redhat.com/support/errata/RHSA-2008-0492.html vendor advisory
http://www.openwall.com/lists/oss-security/2008/05/20/1 mailing list
http://security.gentoo.org/glsa/glsa-200805-20.xml vendor advisory
http://secunia.com/advisories/30355 third party advisory
http://secunia.com/advisories/30317 third party advisory
http://www.securityfocus.com/archive/1/492282/100/0/threaded mailing list
http://www.redhat.com/support/errata/RHSA-2008-0489.html vendor advisory
http://www.securityfocus.com/archive/1/492464/100/0/threaded mailing list
https://exchange.xforce.ibmcloud.com/vulnerabilities/42532 vdb entry
http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00051.html mailing list
http://sourceforge.net/project/shownotes.php?release_id=600646&group_id=21558
http://www.kb.cert.org/vuls/id/111034 third party advisory us government resource
http://secunia.com/advisories/30324 third party advisory
http://secunia.com/advisories/30302 third party advisory
http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.html exploit mailing list
http://www.vupen.com/english/advisories/2008/1583/references vdb entry
http://www.securityfocus.com/bid/29292 patch vdb entry
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00615.html vendor advisory
http://secunia.com/advisories/30330 third party advisory
http://www.vupen.com/english/advisories/2008/1582/references vdb entry
http://www.openwall.com/lists/oss-security/2008/05/20/3 mailing list
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0174
http://secunia.com/advisories/30338 third party advisory
http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html mailing list
http://www.debian.org/security/2008/dsa-1581 vendor advisory
http://www.openwall.com/lists/oss-security/2008/05/20/2 patch mailing list
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00590.html vendor advisory
http://securityreason.com/securityalert/3902 third party advisory
https://issues.rpath.com/browse/RPL-2552
http://www.securitytracker.com/id?1020057 vdb entry
http://secunia.com/advisories/30287 third party advisory
http://git.savannah.gnu.org/gitweb/?p=gnutls.git%3Ba=commitdiff%3Bh=bc8102405fda11ea00ca3b42acc4f4bce9d6e97b
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10935 signature vdb entry
http://www.cert.fi/haavoittuvuudet/advisory-gnutls.html exploit
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00487.html vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2008:106 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2008-1948?
CVE-2008-1948 has been scored as a critical severity vulnerability.
How to fix CVE-2008-1948?
To fix CVE-2008-1948, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2008-1948 being actively exploited in the wild?
It is possible that CVE-2008-1948 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~24% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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