CVE-2019-9740

Summary

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the query string after a ? character) followed by an HTTP header or a Redis command. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.htmlAdvisory
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.htmlAdvisory
• http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.htmlAdvisory
• http://www.openwall.com/lists/oss-security/2021/02/04/2Advisory
• http://www.securityfocus.com/bid/107466Advisory
• https://access.redhat.com/errata/RHSA-2019:1260Advisory
• https://access.redhat.com/errata/RHSA-2019:2030Advisory
• https://access.redhat.com/errata/RHSA-2019:3335Advisory