CVE-2023-46848: Squid: denial of service in ftp
First published: Tue Oct 24 2023(Updated: )
Description: a) Due to an Incorrect Conversion between Numeric Types bug Squid is vulnerable to a Denial of Service attack against FTP Native Relay input validation. b) Due to an Incorrect Conversion between Numeric Types bug Squid is vulnerable to a Denial of Service attack against ftp:// URL validation and access control. Reference: <a href="https://github.com/squid-cache/squid/security/advisories/GHSA-2g3c-pg7q-g59w">https://github.com/squid-cache/squid/security/advisories/GHSA-2g3c-pg7q-g59w</a> Affected versions: 5.0.3-5.9, 6.0-6.3
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid-Cache Squid | >=5.0.3<6.4 | |
| Redhat Enterprise Linux | =9.0 | |
| Redhat Enterprise Linux Eus | =9.2 | |
| Redhat Enterprise Linux Server Aus | =9.2 | |
| Redhat Enterprise Linux Server Tus | =9.2 | |
| redhat/squid | <6.4 | 6.4 |
| ubuntu/squid | <5.7-0ubuntu0.22.04.2 | 5.7-0ubuntu0.22.04.2 |
| ubuntu/squid | <5.7-1ubuntu3.1 | 5.7-1ubuntu3.1 |
| ubuntu/squid | <6.1-2ubuntu1.1 | 6.1-2ubuntu1.1 |
| ubuntu/squid | <6.4 | 6.4 |
| debian/squid | <=5.7-2 | 4.6-1+deb10u7 4.6-1+deb10u10 4.13-10+deb11u2 4.13-10+deb11u3 5.7-2+deb12u1 6.6-1 6.9-1 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2023:6266
- https://access.redhat.com/errata/RHSA-2023:6268
- https://access.redhat.com/errata/RHSA-2023:6748
- https://access.redhat.com/security/cve/CVE-2023-46848
- https://bugzilla.redhat.com/show_bug.cgi?id=2245919
- https://github.com/squid-cache/squid/security/advisories/GHSA-2g3c-pg7q-g59w
- https://security.netapp.com/advisory/ntap-20231214-0005/
- https://launchpad.net/bugs/cve/CVE-2023-46848
- https://security-tracker.debian.org/tracker/CVE-2023-46848
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2245920
- https://lists.squid-cache.org/pipermail/squid-announce/2023-October/000157.html
- https://megamansec.github.io/Squid-Security-Audit/ftp-assert.html
- https://ubuntu.com/security/notices/USN-6500-1
- https://www.cve.org/CVERecord?id=CVE-2023-46848
- https://nvd.nist.gov/vuln/detail/CVE-2023-46848
- https://github.com/squid-cache/squid/commit/7de01969a793b2fdb476e354a9fcda272d400d27
- https://github.com/squid-cache/squid/commit/c67bf049871a49e9871efe50b230a7f37b7039f6
- https://ubuntu.com/security/CVE-2023-46848
Frequently Asked Questions
What is CVE-2023-46848?
CVE-2023-46848 is a vulnerability that allows for a Denial of Service attack in Squid, where a remote attacker can perform DoS by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs from FTP Native input.
How severe is CVE-2023-46848?
CVE-2023-46848 has a severity rating of 8.6 out of 10, which is considered high.
What is the affected software for CVE-2023-46848?
The affected software for CVE-2023-46848 includes Squid version 6.4, Squid-Cache Squid versions between 5.0.3 and 6.4, and Redhat Enterprise Linux versions 9.0, 9.2, and EUS 9.2.
How can the vulnerability in CVE-2023-46848 be exploited?
The vulnerability in CVE-2023-46848 can be exploited by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs from FTP Native input.
Are there any fixes or remedies available for CVE-2023-46848?
Yes, fixes and remedies for CVE-2023-46848 are available. Please refer to the provided Red Hat Security Advisories for more information.
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