it was found that Squid, when used as a reverse proxy, did not handle ESI responses properly. A malicious web server could use this flaw to crash Squid.
Find out more about CVE-2018-1172 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of squid and squid34 as shipped with Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | squid | Affected |
| Red Hat Enterprise Linux 6 | squid34 | Will not fix |
| Red Hat Enterprise Linux 6 | squid | Will not fix |
| Red Hat Enterprise Linux 5 | squid | Not affected |
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