Bug 1295869 (CVE-2016-1494)

Summary:	CVE-2016-1494 python-rsa: Signature forgery using Bleichenbacher'06 attack
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	870022574, bperkins, carnil, yohangraterol92
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:47:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1295870, 1295871
Bug Blocks:

Description Adam Mariš 2016-01-05 16:16:50 UTC

It was found that python-rsa is vulnerable to Bleichenbacher'06 attack, allowing attacker to fake signatures for any public key with low exponent.

Upstream patch:

https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attack-in-verify-by/diff

CVE assignment:

http://seclists.org/oss-sec/2016/q1/18

External reference:

https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/

Comment 1 Adam Mariš 2016-01-05 16:17:18 UTC

Created python-rsa tracking bugs for this issue:

Affects: fedora-all [bug 1295870]
Affects: epel-all [bug 1295871]

Comment 2 Product Security DevOps Team 2019-06-08 02:47:07 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.