CVE-2020-22217
c-ares: Heap buffer over read in ares_parse_soa_reply
Severity Score
5.9
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.
Vulnerabilidad de desbordamiento de búfer en c-ares antes de 1_16_1 a 1_17_0 mediante la función ares_parse_soa_reply en ares_parse_soa_reply.c.
A heap buffer over-read flaw was found in c-ares via the ares_parse_soa_reply function in ares_parse_soa_reply.c.
It was discovered that c-ares incorrectly parsed certain SOA replies. A remote attacker could possibly use this issue to cause c-res to crash, resulting in a denial of service.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-08-13 CVE Reserved
- 2023-08-22 CVE Published
- 2024-10-03 CVE Updated
- 2024-10-03 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-125: Out-of-bounds Read
- CWE-126: Buffer Over-read
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2023/09/msg00014.html | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://github.com/c-ares/c-ares/issues/333 | 2024-10-03 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2020-22217 | 2024-01-30 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2235527 | 2024-01-30 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| C-ares Search vendor "C-ares" | C-ares Search vendor "C-ares" for product "C-ares" | 1.16.1 Search vendor "C-ares" for product "C-ares" and version "1.16.1" | - |
Affected
| ||||||
| C-ares Search vendor "C-ares" | C-ares Search vendor "C-ares" for product "C-ares" | 1.17.0 Search vendor "C-ares" for product "C-ares" and version "1.17.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||