Bug 1177569 (CVE-2014-9424) - CVE-2014-9424 libressl: Double-free in ssl_parse_clienthello_use_srtp_ext() function
Summary: CVE-2014-9424 libressl: Double-free in ssl_parse_clienthello_use_srtp_ext() f...
Alias: CVE-2014-9424
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2014-12-29 05:25 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-17 05:52 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-12-29 05:42:08 UTC

Attachments (Terms of Use)

Description Huzaifa S. Sidhpurwala 2014-12-29 05:25:27 UTC
Common Vulnerabilities and Exposures assigned an identifier CVE-2014-9424 to the following vulnerability:

Name: CVE-2014-9424
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9424
Assigned: 20141228
Reference: MISC: https://code.google.com/p/google-security-research/issues/detail?id=202
Reference: CONFIRM: https://github.com/robertbachmann/openbsd-libssl/commit/62a110d447bb8c16a4c69629e28a42e8c39fd7e0

Double free vulnerability in the ssl_parse_clienthello_use_srtp_ext function in d1_srtp.c in LibreSSL before 2.1.2 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a certain length-verification error during processing of a DTLS handshake.

Comment 1 Huzaifa S. Sidhpurwala 2014-12-29 05:41:24 UTC
This flaw arises because an attempt is made to free the "clnt" structure, which has been already freed previously, resulting in a possible double-free issue. (Looks like just Dos, unless clnt could be user-controlled).

OpenSSL code does not contain the vulnerable code. No "clnt" variable exists in the ssl_parse_clienthello_use_srtp_ext() function. 


Not vulnerable. This issue does not affect the version of OpenSSL package as shipped with Red Hat Enterprise Linux 5, 6 and 7.

Comment 2 Huzaifa S. Sidhpurwala 2014-12-29 05:42:08 UTC
This issue does not affect the version of OpenSSL package, as shipped in Fedora 19, 20 and 21.

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