CVE-2020-8449
HIGHCVSS 7.5/10EPSS 8.31%
Last modified
CVE-2020-8449 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.. EPSS estimates a 8.31% chance of exploitation in the next 30 days.
Description
An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | < 4.10 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Opensuse | Leap | 15.1 |
| Fedoraproject | Fedora | 30 |
| Fedoraproject | Fedora | 31 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_1.txtPatch, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patchPatch, Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patchPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-34Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0002/Third Party Advisory
- https://usn.ubuntu.com/4289-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4682Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.htmlMailing List, Third Party Advisory
- http://www.squid-cache.org/Advisories/SQUID-2020_1.txtPatch, Vendor Advisory
- http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patchPatch, Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patchPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-34Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0002/Third Party Advisory
- https://usn.ubuntu.com/4289-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4682Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8449?
An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.
How severe is CVE-2020-8449?
CVE-2020-8449 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 8.31% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8449?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-8443In OSSEC-HIDS 2.7 through 3.5.0, the server component respon…9.8
- CVE-2020-8444In OSSEC-HIDS 2.7 through 3.5.0, the server component respon…9.8
- CVE-2020-8445In OSSEC-HIDS 2.7 through 3.5.0, the OS_CleanMSG function in…9.8
- CVE-2020-8446In OSSEC-HIDS 2.7 through 3.5.0, the server component respon…5.5
- CVE-2020-8447In OSSEC-HIDS 2.7 through 3.5.0, the server component respon…9.8
- CVE-2020-8448In OSSEC-HIDS 2.7 through 3.5.0, the server component respon…5.5
- CVE-2020-8450An issue was discovered in Squid before 4.10. Due to incorre…7.3
- CVE-2020-8451Rejected reason: The reserved CVE was never used.
- CVE-2020-8452Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2020-8453Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2020-8454Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2020-8455Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
Are you affected by CVE-2020-8449?
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Scan your code nowSource: NVD / NIST