SB2016101601 - Arch Linux update for guile 

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Main Vulnerability Database SB2016101601

SB2016101601 - Arch Linux update for guile

Published: October 16, 2016 Updated: May 3, 2017

Security Bulletin ID SB2016101601
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2016-8605)

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The mkdir procedure of GNU Guile temporarily changed the process' umask to zero. During that time window, in a multithreaded application, other threads could end up creating files with insecure permissions. For example, mkdir without the optional mode argument would create directories as 0777. This is fixed in Guile 2.0.13. Prior versions are affected.


2) Improper access control (CVE-ID: CVE-2016-8606)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The REPL server (--listen) in GNU Guile 2.0.12 allows an attacker to execute arbitrary code via an HTTP inter-protocol attack.


Remediation

Install update from vendor's website.

References