CVE-2020-8517
published 2020-02-04CVE-2020-8517: An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
6.85%
93.2th percentile
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | squid | < squid 4.10-1 (bookworm) | squid 4.10-1 (bookworm) |
| opensuse | leap | — | — |
| squid-cache | squid | < 4.10 | 4.10 |
| squid | squid | >= 0 < 4.10-1 | 4.10-1 |
| squid | squid | >= 0 < 4.10-1 | 4.10-1 |
| squid | squid | >= 0 < 4.10-1 | 4.10-1 |
| squid | squid | >= 0 < 4.10-1 | 4.10-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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GHSA
GHSA-8hwj-cjrf-5wh2: An issue was discovered in Squid before 4
ghsa_unreviewed·2022-05-24
CVE-2020-8517 [MEDIUM] CWE-20 GHSA-8hwj-cjrf-5wh2: An issue was discovered in Squid before 4
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
OSV
squid, squid3 vulnerabilities
osv·2020-02-20·CVSS 7.5
CVE-2019-12528 [HIGH] squid, squid3 vulnerabilities
squid, squid3 vulnerabilities
Jeriko One discovered that Squid incorrectly handled memory when connected
to an FTP server. A remote attacker could possibly use this issue to obtain
sensitive information from Squid memory. (CVE-2019-12528)
Regis Leroy discovered that Squid incorrectly handled certain HTTP
requests. A remote attacker could possibly use this issue to access server
resources prohibited by earlier security filters. (CVE-2020-8449)
Guido Vranken discovered that Squid incorrectly handled certain buffer
operations when acting as a reverse proxy. A remote attacker could use
this issue to cause Squid to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2020-8450)
Aaron Costello discovered that Squid incorrectly handled certain NTLM
authentication
OSV
CVE-2020-8517: An issue was discovered in Squid before 4
osv·2020-02-04·CVSS 7.5
CVE-2020-8517 [HIGH] CVE-2020-8517: An issue was discovered in Squid before 4
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Ubuntu
Squid vulnerabilities
vendor_ubuntu·2020-02-20·CVSS 7.5
CVE-2019-12528 [HIGH] Squid vulnerabilities
Title: Squid vulnerabilities
Summary: Several security issues were fixed in Squid.
Jeriko One discovered that Squid incorrectly handled memory when connected
to an FTP server. A remote attacker could possibly use this issue to obtain
sensitive information from Squid memory. (CVE-2019-12528)
Regis Leroy discovered that Squid incorrectly handled certain HTTP
requests. A remote attacker could possibly use this issue to access server
resources prohibited by earlier security filters. (CVE-2020-8449)
Guido Vranken discovered that Squid incorrectly handled certain buffer
operations when acting as a reverse proxy. A remote attacker could use
this issue to cause Squid to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2020-8450)
Aaron Costello discovered that
Red Hat
squid: Buffer Overflow in ext_lm_group_acl helper
vendor_redhat·2020-02-02·CVSS 7.5
CVE-2020-8517 [HIGH] CWE-119 squid: Buffer Overflow in ext_lm_group_acl helper
squid: Buffer Overflow in ext_lm_group_acl helper
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Package: squid (Red Hat Enterprise Linux 5) - Not affected
Package: squid (Red Hat Enterprise Linux 6) - Not affected
Package: squid34 (Red Hat Enterprise Linux 6) - Not affected
Package: squid (Red Hat Enterprise Linux 7) - Not affected
Package: squid:4/squid (Red Hat Enterprise Linux 8) - Not affected
Debian
CVE-2020-8517: squid - An issue was discovered in Squid before 4.10. Due to incorrect input validation,...
vendor_debian·2020·CVSS 7.5
CVE-2020-8517 [HIGH] CVE-2020-8517: squid - An issue was discovered in Squid before 4.10. Due to incorrect input validation,...
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Scope: local
bookworm: resolved (fixed in 4.10-1)
bullseye: resolved (fixed in 4.10-1)
forky: resolved (fixed in 4.10-1)
sid: resolved (fixed in 4.10-1)
trixie: resolved (fixed in 4.10-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper [fedora-all]
bugzilla·2020-02-05·CVSS 7.5
CVE-2020-8517 [HIGH] CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper [fedora-all]
CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions
Bugzilla
CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper
bugzilla·2020-02-05·CVSS 7.5
CVE-2020-8517 [HIGH] CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper
CVE-2020-8517 squid: Buffer Overflow in ext_lm_group_acl helper
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
References:
http://www.squid-cache.org/Advisories/SQUID-2020_3.txt
http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch
Discussion:
Created squid tracking bugs for this issue:
Affects: fedora-all [bug 1798546]
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlhttp://www.squid-cache.org/Advisories/SQUID-2020_3.txthttp://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patchhttps://security.gentoo.org/glsa/202003-34https://security.netapp.com/advisory/ntap-20210304-0002/https://usn.ubuntu.com/4289-1/http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlhttp://www.squid-cache.org/Advisories/SQUID-2020_3.txthttp://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patchhttps://security.gentoo.org/glsa/202003-34https://security.netapp.com/advisory/ntap-20210304-0002/https://usn.ubuntu.com/4289-1/
2020-02-04
Published