Bug 1509303 – CVE-2017-16228 python-dulwich: Setting SSH arguments from untrusted URLs allows code execution

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Bug 1509303 - (CVE-2017-16228) CVE-2017-16228 python-dulwich: Setting SSH arguments from untrusted URLs allows code execution

Summary:	CVE-2017-16228 python-dulwich: Setting SSH arguments from untrusted URLs allo...

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-16228

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

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20171029,repor...
Keywords:	Security

Depends On:	1509304 1509305
Blocks:	1509317
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Reported:	2017-11-03 09:52 EDT by Adam Mariš
Modified:	2017-11-27 16:08 EST (History)
CC List:	14 users (show)

See Also:
Fixed In Version:	python-dulwich 0.18.5
Doc Type:	If docs needed, set a value
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Last Closed:	2017-11-27 16:08:04 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-11-03 09:52:20 EDT

Dulwich before 0.18.5, when an SSH subprocess is used, allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-1000116, and CVE-2017-1000117.

Upstream patch:

https://www.dulwich.io/code/dulwich/commit/7116a0cbbda571f7dac863f4b1c00b6e16d6d8d6/

Comment 1 Adam Mariš 2017-11-03 09:52:32 EDT

Created python-dulwich tracking bugs for this issue:

Affects: epel-all [bug 1509304]
Affects: fedora-all [bug 1509305]

Comment 2 Joshua Padman 2017-11-16 20:21:42 EST

OpenStack reno is the package that requires python-dulwich. However, it does not use the vulnerable function within python-dulwich. The functionality used by reno is for manipulating git repositories on disk.

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