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GLSA
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Joined: 12 May 2004
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PostPosted: Fri May 15, 2020 1:26 am    Post subject: [ GLSA 202005-09 ] Python Reply with quote

Gentoo Linux Security Advisory

Title: Python: Denial of Service (GLSA 202005-09)
Severity: normal
Exploitable: remote
Date: 2020-05-14
Bug(s): #707822
ID: 202005-09

Synopsis

A vulnerability in Python could lead to a Denial of Service
condition.


Background

Python is an interpreted, interactive, object-oriented programming
language.


Affected Packages

Package: dev-lang/python
Vulnerable: < 2.7.18
Vulnerable: < 3.6.10-r2
Vulnerable: < 3.7.7-r2
Vulnerable: < 3.8.2-r2
Unaffected: >= 2.7.18
Unaffected: >= 3.6.10-r2
Unaffected: >= 3.7.7-r2
Unaffected: >= 3.8.2-r2
Architectures: All supported architectures


Description

An issue was discovered in urllib.request.AbstractBasicAuthHandler which
allowed a remote attacker to send malicious data causing extensive
regular expression backtracking.


Impact

An attacker could cause a possible Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Python 2.7 users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-lang/python-2.7.18:2.7"
   
All Python 3.6 users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-lang/python-3.6.10-r2:3.6"
   
All Python 3.7 users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-lang/python-3.7.7-r2:3.7"
   
All Python 3.8 users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-lang/python-3.8.2-r2:3.8"
   


References

CVE-2020-8492
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