Bug 1446631 – CVE-2017-7502 nss: Null pointer dereference when handling empty SSLv2 messages

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Bug 1446631 - (CVE-2017-7502) CVE-2017-7502 nss: Null pointer dereference when handling empty SSLv2 messages

Summary:	CVE-2017-7502 nss: Null pointer dereference when handling empty SSLv2 messages

Status:	CLOSED ERRATA

Aliases:	CVE-2017-7502

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=important,public=20170530,repo...
Keywords:	Security

Duplicates:	1449161 1450763 (view as bug list)
Depends On:	1435017 1450750 1450751 1450752 1450753
Blocks:	1446634
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Reported:	2017-04-28 09:10 EDT by Adam Mariš
Modified:	2017-06-21 11:11 EDT (History)
CC List:	10 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	A null pointer dereference flaw was found in the way NSS handled empty SSLv2 messages. An attacker could use this flaw to crash a server application compiled against the NSS library.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-05-31 08:46:43 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:1364	normal	SHIPPED_LIVE	Important: nss security and bug fix update	2017-05-30 11:08:08 EDT
Red Hat Product Errata	RHSA-2017:1365	normal	SHIPPED_LIVE	Important: nss security and bug fix update	2017-05-30 08:04:45 EDT
Red Hat Product Errata	RHSA-2017:1567	normal	SHIPPED_LIVE	Important: Red Hat Container Development Kit 3.0.0 security update	2017-06-21 15:11:05 EDT

Groups: None (edit)

Description Adam Mariš 2017-04-28 09:10:54 EDT

Null pointer dereference vulnerability in NSS was found when server receives empty SSLv2 messages. This issue was introduced with the recent removal of SSLv2 protocol from upstream code in 3.24.0 and introduction of dedicated parser able to handle just sslv2-style hello messages.

Upstream patch:

https://hg.mozilla.org/projects/nss/rev/55ea60effd0d

Comment 3 Hubert Kario 2017-05-15 10:29:23 EDT

*** Bug 1450763 has been marked as a duplicate of this bug. ***

Comment 4 Hubert Kario 2017-05-26 07:41:19 EDT

*** Bug 1449161 has been marked as a duplicate of this bug. ***

Comment 5 errata-xmlrpc 2017-05-30 04:05:03 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1365 https://access.redhat.com/errata/RHSA-2017:1365

Comment 6 errata-xmlrpc 2017-05-30 07:08:27 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:1364 https://access.redhat.com/errata/RHSA-2017:1364

Comment 8 errata-xmlrpc 2017-06-21 11:11:41 EDT

This issue has been addressed in the following products:

  CDK 3.0

Via RHSA-2017:1567 https://access.redhat.com/errata/RHSA-2017:1567

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