CVE-2019-18679: Infoleak
First published: Tue Nov 26 2019(Updated: )
An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid-Cache Squid | >=2.0<=2.7 | |
| Squid-Cache Squid | >=3.0<=3.5.28 | |
| Squid-Cache Squid | >=4.0<=4.8 | |
| Squid-Cache Squid | =2.7-stable2 | |
| Squid-Cache Squid | =2.7-stable3 | |
| Squid-Cache Squid | =2.7-stable4 | |
| Squid-Cache Squid | =2.7-stable5 | |
| Squid-Cache Squid | =2.7-stable6 | |
| Squid-Cache Squid | =2.7-stable7 | |
| Squid-Cache Squid | =2.7-stable8 | |
| Squid-Cache Squid | =2.7-stable9 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Debian Debian Linux | =8.0 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| ubuntu/squid | <4.9-2ubuntu1 | 4.9-2ubuntu1 |
| ubuntu/squid | <4.4-1ubuntu2.3 | 4.4-1ubuntu2.3 |
| ubuntu/squid | <4.8-1ubuntu2.1 | 4.8-1ubuntu2.1 |
| ubuntu/squid | <4.9-2ubuntu1 | 4.9-2ubuntu1 |
| ubuntu/squid | <4.9-2ubuntu1 | 4.9-2ubuntu1 |
| ubuntu/squid | <4.9-1 | 4.9-1 |
| ubuntu/squid3 | <3.5.27-1ubuntu1.4 | 3.5.27-1ubuntu1.4 |
| ubuntu/squid3 | <3.5.12-1ubuntu7.9 | 3.5.12-1ubuntu7.9 |
| debian/squid | 4.6-1+deb10u7 4.6-1+deb10u10 4.13-10+deb11u2 4.13-10+deb11u3 5.7-2 5.7-2+deb12u1 6.6-1 6.9-1 |
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Reference Links
- http://www.squid-cache.org/Advisories/SQUID-2019_11.txt
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch
- https://bugzilla.suse.com/show_bug.cgi?id=1156324
- https://github.com/squid-cache/squid/pull/491
- https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
- https://security.gentoo.org/glsa/202003-34
- https://usn.ubuntu.com/4213-1/
- https://www.debian.org/security/2020/dsa-4682
- https://launchpad.net/bugs/cve/CVE-2019-18679
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-6f2841090dffbec1a2b2417e18bb3dc71d62dd2e.patch
- https://security-tracker.debian.org/tracker/CVE-2019-18679
- https://ubuntu.com/security/notices/USN-4213-1
- https://www.cve.org/CVERecord?id=CVE-2019-18679
- https://nvd.nist.gov/vuln/detail/CVE-2019-18679
- https://ubuntu.com/security/CVE-2019-18679
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2019-18679.
What software versions are affected by this vulnerability?
Squid 2.x, 3.x, and 4.x through 4.8 are affected.
How severe is CVE-2019-18679?
CVE-2019-18679 has a severity rating of 7.5 (high).
How can I fix the vulnerability?
Upgrade to Squid 4.9-2ubuntu1 (or later), or apply the recommended patches.
Where can I find more information about CVE-2019-18679?
More information can be found at the following references: [Link 1](http://www.squid-cache.org/Advisories/SQUID-2019_11.txt), [Link 2](http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch), [Link 3](https://bugzilla.suse.com/show_bug.cgi?id=1156324)
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- version/squid-cache squid/3.5.28
- version/squid-cache squid/4.0
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- version/squid-cache squid/2.7-stable3
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- version/squid-cache squid/2.7-stable8
- version/squid-cache squid/2.7-stable9
- vendor/canonical
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- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/19.04
- version/canonical ubuntu linux/19.10
- vendor/debian
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- package-manager/debian
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