Bug 1335396 (CVE-2016-4579) - CVE-2016-4579 libksba: Out-of-bounds read in _ksba_ber_parse_tl
Summary: CVE-2016-4579 libksba: Out-of-bounds read in _ksba_ber_parse_tl
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-4579
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1334832
Blocks: 1211262
TreeView+ depends on / blocked
 
Reported: 2016-05-12 07:39 UTC by Andrej Nemec
Modified: 2019-09-29 13:49 UTC (History)
2 users (show)

Fixed In Version: libksba 1.3.4
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 02:51:43 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2016-05-12 07:39:55 UTC 
A vulnerability was found in libksba. The returned length of the object from _ksba_ber_parse_tl (ti.length) was not always checked against the actual buffer length, thus leading to a read access after the end of the buffer and a crash.

Upstream fix:

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=a7eed17a0b2a1c09ef986f3b4b323cd31cea2b64

References:

http://seclists.org/oss-sec/2016/q2/304
Comment 1 Andrej Nemec 2016-05-12 07:44:58 UTC 
Created libksba tracking bugs for this issue:

Affects: fedora-all [bug 1334832]
Comment 2 Fedora Update System 2016-05-14 23:25:51 UTC 
libksba-1.3.4-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2016-05-16 22:25:51 UTC 
libksba-1.3.4-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
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