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amazonAmazonALAS-2023-1717
HistoryMar 30, 2023 - 10:50 p.m.

Important: python-twisted-web

2023-03-3022:50:00
alas.aws.amazon.com
26
python-twisted-web
http request smuggling
host header issue
event-based framework
version 22.10.0rc1
content-length header
html injection
script injection
cve-2022-24801
cve-2022-39348
mitre
red hat

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

0.007 Low

EPSS

Percentile

81.0%

Issue Overview:

A flaw was found in python-twisted. This vulnerability occurs due to the parsing of illegal constructs in the twisted.web.http module. The illegal constructs include ‘+/-’ in the Content-Length header, ‘\n and \t’ etc. Non-conformant parsing leads to a desync if requests pass through multiple HTTP parsers. This flaw allows a remote attacker to perform an HTTP request smuggling attack. (CVE-2022-24801)

Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host header does not match a configured host twisted.web.vhost.NameVirtualHost will return a NoResource resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds. (CVE-2022-39348)

Affected Packages:

python-twisted-web

Issue Correction:
Run yum update python-twisted-web to update your system.

New Packages:

i686:  
    python26-twisted-web-8.2.0-6.8.amzn1.i686  
    python27-twisted-web-8.2.0-6.8.amzn1.i686  
  
src:  
    python-twisted-web-8.2.0-6.8.amzn1.src  
  
x86_64:  
    python26-twisted-web-8.2.0-6.8.amzn1.x86_64  
    python27-twisted-web-8.2.0-6.8.amzn1.x86_64  

Additional References

Red Hat: CVE-2022-24801, CVE-2022-39348

Mitre: CVE-2022-24801, CVE-2022-39348

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

0.007 Low

EPSS

Percentile

81.0%