CVE-2020-11945

Published: Apr 23, 2020Modified: Nov 21, 2024

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).

Affected (13)

Products: Squid Cache: Squid · Debian: Debian Linux · Opensuse: Leap · +2 more

Show all products

Squid Cache: Squid · Debian: Debian Linux · Opensuse: Leap · Fedoraproject: Fedora · Canonical: Ubuntu Linux

1 product

1 product

1 product

1 product

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Squid Cache Squid	From 3.0 to 3.5.28
Squid Cache Squid	From 4.0 to 4.11
Squid Cache Squid	From 5.0 to 5.0.2

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 10.0
Debian Debian Linux	Version 9.0

Configuration C

1 vulnerable

Vulnerable Software	Affected Versions
Opensuse Leap	Version 15.1

Configuration D

3 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 30
Fedoraproject Fedora	Version 31
Fedoraproject Fedora	Version 32

Configuration E

4 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 16.04
Canonical Ubuntu Linux	Version 18.04
Canonical Ubuntu Linux	Version 19.10
Canonical Ubuntu Linux	Version 20.04

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (30)

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://master.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

Source: cve@mitre.org

Vendor Advisory

http://www.openwall.com/lists/oss-security/2020/04/23/2

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

Source: cve@mitre.org

PatchVendor Advisory

https://bugzilla.suse.com/show_bug.cgi?id=1170313

Source: cve@mitre.org

Issue TrackingThird Party Advisory

https://github.com/squid-cache/squid/commit/eeebf0f37a72a2de08348e85ae34b02c34e9a811

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/squid-cache/squid/pull/585

Source: cve@mitre.org

PatchThird Party Advisory

https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FWQRYZJPHAZBLXJ56FPCHJN5X2FP3VA/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4MWXEZAJSOGRJSS2JCJK4WBSND4IV46/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RV2VZWFJNO3B56IVN56HHKJASG5DYUIX/

Source: cve@mitre.org

https://security.gentoo.org/glsa/202005-05

Source: cve@mitre.org

Third Party Advisory

https://security.netapp.com/advisory/ntap-20210304-0004/

Source: cve@mitre.org

Third Party Advisory

https://usn.ubuntu.com/4356-1/

Source: cve@mitre.org

Third Party Advisory

https://www.debian.org/security/2020/dsa-4682

Source: cve@mitre.org

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://master.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

http://www.openwall.com/lists/oss-security/2020/04/23/2

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://www.squid-cache.org/Versions/v4/changesets/squid-4-eeebf0f37a72a2de08348e85ae34b02c34e9a811.patch

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

https://bugzilla.suse.com/show_bug.cgi?id=1170313

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingThird Party Advisory

https://github.com/squid-cache/squid/commit/eeebf0f37a72a2de08348e85ae34b02c34e9a811

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://github.com/squid-cache/squid/pull/585

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FWQRYZJPHAZBLXJ56FPCHJN5X2FP3VA/

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4MWXEZAJSOGRJSS2JCJK4WBSND4IV46/

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RV2VZWFJNO3B56IVN56HHKJASG5DYUIX/

Source: af854a3a-2127-422b-91ae-364da2661108

https://security.gentoo.org/glsa/202005-05

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://security.netapp.com/advisory/ntap-20210304-0004/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://usn.ubuntu.com/4356-1/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.debian.org/security/2020/dsa-4682

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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