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Vulnerability Details : CVE-2019-9740

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.
Publish Date : 2019-03-13 Last Update Date : 2021-02-04
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:2030: python security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20192030 unix
RHSA-2019:3335: python27:2.7 security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20193335 unix
RHSA-2019:3520: python3 security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20193520 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-9740

# Product Type Vendor Product Version Update Edition Language
1 Application Python Python * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Python Python 1

- References For CVE-2019-9740
GENTOO GLSA-202003-26[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
FEDORA FEDORA-2019-57462fa10d
MLIST [debian-lts-announce] 20200715 [SECURITY] [DLA 2280-1] python3.5 security update[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
FEDORA FEDORA-2019-d202cda4f8[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
FEDORA FEDORA-2019-b06ec6159b
REDHAT RHSA-2019:3725
REDHAT RHSA-2019:3335
REDHAT RHSA-2019:3520
BUGTRAQ 20191021 [slackware-security] python (SSA:2019-293-01)
SUSE openSUSE-SU-2019:2133
SUSE openSUSE-SU-2019:2131
REDHAT RHSA-2019:2030[email protected]/message/2ORNTF62QPLMJXIQ7KTZQ2776LMIXEKL/
FEDORA FEDORA-2019-7df59302e0[email protected]/message/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/
FEDORA FEDORA-2019-7723d4774a
MLIST [debian-lts-announce] 20190625 [SECURITY] [DLA 1835-2] python3.4 regression update
MLIST [debian-lts-announce] 20190625 [SECURITY] [DLA 1834-1] python2.7 security update
MLIST [debian-lts-announce] 20190625 [SECURITY] [DLA 1835-1] python3.4 security update CONFIRM
REDHAT RHSA-2019:1260[email protected]/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/
FEDORA FEDORA-2019-ec26883852[email protected]/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/
FEDORA FEDORA-2019-1ffd6b6064
BID 107466 Python CVE-2019-9740 CRLF Injection Vulnerability Release Date:2019-03-12
MLIST [debian-lts-announce] 20200822 [SECURITY] [DLA 2337-1] python2.7 security update
MLIST [oss-security] 20210204 [CVE-2020-15693, CVE-2020-15694] Nim - stdlib Httpclient - Header Crlf Injection & Server Response Validation

- Metasploit Modules Related To CVE-2019-9740

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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