CVE-2020-8517
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Overview
- CVE ID
- CVE-2020-8517
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-02-04T20:15:14
- Last Modified Date
- 2021-07-21T11:39:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* | 1 | OR | 4.10 | |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| http://www.squid-cache.org/Advisories/SQUID-2020_3.txt | Vendor Advisory |
| http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch | Patch Vendor Advisory |
| https://usn.ubuntu.com/4289-1/ | Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202003-34 | Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210304-0002/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-8517 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8517 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:05:52 | Added to TrackCVE | |||
| 2022-12-04 10:39:09 | 2020-02-04T20:15Z | 2020-02-04T20:15:14 | CVE Published Date | updated |
| 2022-12-04 10:39:10 | 2021-07-21T11:39:23 | CVE Modified Date | updated | |
| 2022-12-04 10:39:10 | Analyzed | Vulnerability Status | updated |