nntplib unlimited read

Unlimited read from connection in nntplib.

Dates:

  • Disclosure date: 2012-09-25 (Python issue bpo-16040 reported)
  • Red Hat impact: Moderate

Fixed In

Python issue

nntplib: unlimited readline() from connection.

  • Python issue: bpo-16040
  • Creation date: 2012-09-25
  • Reporter: Christian Heimes

CVE-2013-1752

** REJECT ** Various versions of Python do not properly restrict readline calls, which allows remote attackers to cause a denial of service (memory consumption) via a long string, related to (1) httplib - fixed in 2.7.4, 2.6.9, and 3.3.3; (2) ftplib - fixed in 2.7.6, 2.6.9, 3.3.3; (3) imaplib - not yet fixed in 2.7.x, fixed in 2.6.9, 3.3.3; (4) nntplib - fixed in 2.7.6, 2.6.9, 3.3.3; (5) poplib - not yet fixed in 2.7.x, fixed in 2.6.9, 3.3.3; and (6) smtplib - not yet fixed in 2.7.x, fixed in 2.6.9, not yet fixed in 3.3.x. NOTE: this was REJECTed because it is incompatible with CNT1 “Independently Fixable” in the CVE Counting Decisions.

Timeline

Timeline using the disclosure date 2012-09-25 as reference:

  • 2012-09-25: Python issue bpo-16040 reported by Christian Heimes
  • 2013-09-30 (+370 days): commit 42faa55 (branch 2.7)
  • 2013-10-29 (+399 days): Python 2.6.9 released
  • 2013-11-10 (+411 days): Python 2.7.6 released
  • 2014-10-11 (+746 days): Python 3.2.6 released
  • 2014-10-12 (+747 days): commit b3ac843 (branch 3.2)
  • 2015-02-23 (+881 days): Python 3.4.3 released
  • 2015-09-09: Python 3.5.0 released
  • 2017-09-19 (+1820 days): Python 3.3.7 released
  • 2019-06-03 (+2442 days): CVE-2013-1752 published