Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2019-12529

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.

Published

2019-07-11T19:15:13.157

Last Modified

2024-11-21T04:23:02.987

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	squid-cache	squid	< 2.7	Yes
Application	squid-cache	squid	≤ 3.5.28	Yes
Application	squid-cache	squid	≤ 4.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Application	squid-cache	squid	2.7	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	fedoraproject	fedora	29	Yes
Operating System	opensuse	leap	15.0	Yes
Operating System	opensuse	leap	15.1	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	19.04	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html Mailing List, Third Party Advisory ([email protected])
http://www.squid-cache.org/Versions/v4/changesets/ Vendor Advisory ([email protected])
http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch Patch, Vendor Advisory ([email protected])
https://github.com/squid-cache/squid/commits/v4 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ ([email protected])
https://seclists.org/bugtraq/2019/Aug/42 Mailing List, Third Party Advisory ([email protected])
https://usn.ubuntu.com/4065-1/ Third Party Advisory ([email protected])
https://usn.ubuntu.com/4065-2/ Third Party Advisory ([email protected])
https://www.debian.org/security/2019/dsa-4507 Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Versions/v4/changesets/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/squid-cache/squid/commits/v4 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/bugtraq/2019/Aug/42 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4065-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4065-2/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2019/dsa-4507 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)