CVE-2020-8450
published 2020-02-04CVE-2020-8450: An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a…
PriorityP263high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
71.79%
99.3th percentile
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | squid | < squid 4.10-1 (bookworm) | squid 4.10-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| 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 |
Detection & IOCsextracted from sources · hover to see the quote
- →Target Squid instances configured as reverse proxy (http_port 'accel' or 'vhost' in squid 2.x/3.x, or http_port 'accel' in squid 4.x) — these are the only configurations exploitable by a remote client triggering the buffer overflow. ↗
- →Exploitation results in Squid crash (denial of service) or possibly arbitrary code execution; monitor for unexpected squid process termination on reverse-proxy deployments. ↗
- →On RHEL 6–8, FORTIFY_SOURCE limits impact to application termination rather than code execution; alert on squid process crashes as a lower-severity but still detectable signal. ↗
- ·Vulnerability only affects Squid instances acting as a reverse proxy; standard forward-proxy deployments are not affected. ↗
- ·Squid versions before 4.10 are vulnerable; fixed in 4.10. Patch references available from the Squid advisory and changeset URLs. ↗
- ·Red Hat Enterprise Linux 5 squid packages are not affected; RHEL 6 packages will not be fixed (FORTIFY_SOURCE mitigates to crash-only impact). ↗
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_debian7.3HIGH
vendor_redhat7.3HIGH
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GHSA
GHSA-vrcq-r42v-wc44: An issue was discovered in Squid before 4
ghsa_unreviewed·2022-05-24
CVE-2020-8450 [HIGH] CWE-119 GHSA-vrcq-r42v-wc44: An issue was discovered in Squid before 4
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse 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-2020-8450: An issue was discovered in Squid before 4
osv·2020-02-04·CVSS 7.3
CVE-2020-8450 [HIGH] CVE-2020-8450: An issue was discovered in Squid before 4
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse 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 reverse-proxy configurations
vendor_redhat·2020-02-03·CVSS 7.3
CVE-2020-8450 [HIGH] CWE-119 squid: Buffer overflow in reverse-proxy configurations
squid: Buffer overflow in reverse-proxy configurations
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
A flaw was found in squid. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
Statement: Although the squid packages for Red Hat Enterprise Linux 6 through 8 are affected, they are compiled with FORTIFY_SOURCE, which in this case limits the impact of the buffer overflow to an application termination. This only affects deployments acting as reverse proxy with a http_port 'accel' or 'vhost' (squid 2.x and 3.x) or http_port 'accel' configuration (squid 4.x).
Package: squid (Red Hat Enterpri
Debian
CVE-2020-8450: squid - An issue was discovered in Squid before 4.10. Due to incorrect buffer management...
vendor_debian·2020·CVSS 7.3
CVE-2020-8450 [HIGH] CVE-2020-8450: squid - An issue was discovered in Squid before 4.10. Due to incorrect buffer management...
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse 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-2020-8450 squid: Buffer overflow in a Squid acting as reverse-proxy [fedora-all]
bugzilla·2020-02-05·CVSS 7.3
CVE-2020-8450 [HIGH] CVE-2020-8450 squid: Buffer overflow in a Squid acting as reverse-proxy [fedora-all]
CVE-2020-8450 squid: Buffer overflow in a Squid acting as reverse-proxy [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 v
Bugzilla
CVE-2020-8450 squid: Buffer overflow in reverse-proxy configurations
bugzilla·2020-02-05·CVSS 7.3
CVE-2020-8450 [HIGH] CVE-2020-8450 squid: Buffer overflow in reverse-proxy configurations
CVE-2020-8450 squid: Buffer overflow in reverse-proxy configurations
An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
References:
http://www.squid-cache.org/Advisories/SQUID-2020_1.txt
http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-8e657e835965c3a011375feaa0359921c5b3e2dd.patch
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-b3a0719affab099c684f1cd62b79ab02816fa962.patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-d8e4715992d0e530871519549add5519cbac0598.patch
Discussion:
Created squi
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlhttp://www.squid-cache.org/Advisories/SQUID-2020_1.txthttp://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patchhttp://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-8e657e835965c3a011375feaa0359921c5b3e2dd.patchhttp://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patchhttp://www.squid-cache.org/Versions/v4/changesets/squid-4-b3a0719affab099c684f1cd62b79ab02816fa962.patchhttp://www.squid-cache.org/Versions/v4/changesets/squid-4-d8e4715992d0e530871519549add5519cbac0598.patchhttps://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G6W2IQ7QV2OGREFFUBNVZIDD3RJBDE4R/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TSU6SPANL27AGK5PCGBJOKG4LUWA555J/https://security.gentoo.org/glsa/202003-34https://security.netapp.com/advisory/ntap-20210304-0002/https://usn.ubuntu.com/4289-1/https://www.debian.org/security/2020/dsa-4682http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlhttp://www.squid-cache.org/Advisories/SQUID-2020_1.txthttp://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patchhttp://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-8e657e835965c3a011375feaa0359921c5b3e2dd.patchhttp://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patchhttp://www.squid-cache.org/Versions/v4/changesets/squid-4-b3a0719affab099c684f1cd62b79ab02816fa962.patchhttp://www.squid-cache.org/Versions/v4/changesets/squid-4-d8e4715992d0e530871519549add5519cbac0598.patchhttps://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G6W2IQ7QV2OGREFFUBNVZIDD3RJBDE4R/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TSU6SPANL27AGK5PCGBJOKG4LUWA555J/https://security.gentoo.org/glsa/202003-34https://security.netapp.com/advisory/ntap-20210304-0002/https://usn.ubuntu.com/4289-1/https://www.debian.org/security/2020/dsa-4682
2020-02-04
Published