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Bug 1383972 - (CVE-2016-8606) CVE-2016-8606 guile: REPL server vulnerable to HTTP inter-protocol attacks
CVE-2016-8606 guile: REPL server vulnerable to HTTP inter-protocol attacks
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20161011,repor...
: Security
Depends On: 1383973 1383974 1383975
Blocks: 1383977
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Reported: 2016-10-12 05:31 EDT by Andrej Nemec
Modified: 2016-12-16 09:23 EST (History)
3 users (show)

See Also:
Fixed In Version: guile 2.0.13
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in guile's REPL server (--listen), making it vulnerable to HTTP inter-protocol attacks. A crafted website, when visited by a developer with an instance of the REPL server, could cause arbitrary code execution within the guile scheme interpreter.
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Last Closed: 2016-12-16 00:05:10 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2016-10-12 05:31:36 EDT 
GNU Guile, an implementation of the Scheme language, provides a "REPL server" which is a command prompt that developers can connect to for live coding and debugging purposes. The REPL server is started by the '--listen' command-line option or equivalent API.

It was  reported that the REPL server is vulnerable to the HTTP inter-protocol attack

This constitutes a remote code execution vulnerability for developers running a REPL server that listens on a loopback device or private network. Applications that do not run a REPL server, as is usually the case, are unaffected.

References:

http://seclists.org/oss-sec/2016/q4/100

Upstream patch:

http://git.savannah.gnu.org/cgit/guile.git/commit/?h=stable-2.0&id=08c021916dbd3a235a9f9cc33df4c418c0724e03
Comment 1 Andrej Nemec 2016-10-12 05:33:22 EDT 
Created compat-guile18 tracking bugs for this issue:

Affects: fedora-all [bug 1383974]
Affects: epel-7 [bug 1383975]
Comment 2 Andrej Nemec 2016-10-12 05:33:29 EDT 
Created guile tracking bugs for this issue:

Affects: fedora-all [bug 1383973]
Comment 3 Miroslav Lichvar 2016-10-12 06:03:41 EDT 
It seems the repl server was added in guile-2.0, so the compat-guile18 packages shouldn't be affected.
Comment 4 Doran Moppert 2016-12-16 00:04:39 EST 
Statement:

Red Hat Product Security has rated this issue as having Moderate security
impact. This issue is not currently planned to be addressed in future
updates. For additional information, refer to the Issue Severity
Classification: https://access.redhat.com/security/updates/classification/.
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