Bug 616780 (CVE-2017-8301)

Summary:	<dev-libs/libressl-2.5.4: lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result
Product:	Gentoo Security	Reporter:	GLSAMaker/CVETool Bot <glsamaker>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	trivial	CC:	libressl
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://www.openwall.com/lists/oss-security/2017/04/27/11
Whiteboard:	~4 [noglsa cve]
Package list:		Runtime testing required:	---

Description GLSAMaker/CVETool Bot gentoo-dev

2017-04-27 18:44:57 UTC

CVE-2017-8301 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8301):
  LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if
  SSL_get_verify_result is relied upon for a later check of a verification
  result, in a use case where a user-provided verification callback returns 1,
  as demonstrated by acceptance of invalid certificates by nginx.

Comment 1 Shiz 2017-04-27 18:47:29 UTC

Fix is reverting commit ddd98f8ea741a122952185a36c1396c14c2fda74[1] as per [2],
as we did in Alpine[3].


[1]: https://github.com/libressl-portable/openbsd/commit/ddd98f8ea741a122952185a36c1396c14c2fda74
[2]: https://github.com/libressl-portable/portable/issues/307#issuecomment-297200962
[3]: https://git.alpinelinux.org/cgit/aports/commit/?id=500f378f52a862e91c61de633df00197d4afd366

Comment 2 dwfreed 2017-05-03 17:30:49 UTC

FYI, libressl released portable version 2.5.4 yesterday, which contains a fix for this CVE, as per the Github issue linked in comment 1.

Comment 3 Thomas Deutschmann (RETIRED) gentoo-dev

2017-06-04 22:37:21 UTC

@ Maintainer(s): Please drop =dev-libs/libressl-2.5.3!

Comment 4 Anthony Basile gentoo-dev

2017-06-05 00:20:02 UTC

(In reply to Thomas Deutschmann from comment #3)
> @ Maintainer(s): Please drop =dev-libs/libressl-2.5.3!

i've dropped 2.5.3