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CVE-2019-18348

Published: October 23, 2019Last modified: November 8, 2023

Description

An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. 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 host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.

Severity score breakdown

ParameterValue
Base score6.1
Attack VectorNETWORK
Attack complexityLOW
Privileges requiredNONE
User interactionREQUIRED
ScopeCHANGED
ConfidentialityLOW
Integrity impactLOW
Availability impactNONE
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSpython3Not affected (3.11.5-r0)
Streampython3Not affected (3.11.5-r0)

References

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