CVE-2020-25681
CVSS V2 High 8.3
CVSS V3 High 8.1
Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Overview
- CVE ID
- CVE-2020-25681
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-01-20T17:15:12
- Last Modified Date
- 2021-03-26T18:22:28
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* | 1 | OR | 2.83 | |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:C
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- COMPLETE
- Base Score
- 8.3
- Severity
- HIGH
- Exploitability Score
- 8.6
- Impact Score
- 8.5
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1881875 | Issue Tracking Patch Third Party Advisory |
| https://www.jsof-tech.com/disclosures/dnspooq/ | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202101-17 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4844 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/ | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-25681 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25681 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:18:34 | Added to TrackCVE | |||
| 2022-12-05 20:34:44 | 2021-01-20T17:15Z | 2021-01-20T17:15:12 | CVE Published Date | updated |
| 2022-12-05 20:34:44 | 2021-03-26T18:22:28 | CVE Modified Date | updated | |
| 2022-12-05 20:34:44 | Analyzed | Vulnerability Status | updated |