CVE-2021-46784
squid: DoS when processing gopher server responses
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
En Squid versiones 3.x hasta 3.5.28, versiones 4.x hasta 4.17 y versiones 5.x anteriores a 5.6, debido a una administración inapropiada del búfer, puede producirse una denegación de servicio cuando son procesadas respuestas largas del servidor Gopher
A vulnerability was found in squid (Web proxy cache server). This issue occurs due to improper buffer management while processing Gopher server responses. This flaw leads to a remote denial of service or a crash if it receives specially crafted network traffic, either by mistake or a malicious actor.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-04-21 CVE Reserved
- 2022-06-23 CVE Published
- 2024-08-04 CVE Updated
- 2024-10-08 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-617: Reachable Assertion
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2023/10/13/1 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2023/10/13/10 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2023/10/21/1 | Mailing List |
|
| http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch | Broken Link | |
| https://security-tracker.debian.org/tracker/CVE-2021-46784 | Third Party Advisory | |
| https://security.netapp.com/advisory/ntap-20221223-0007 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-46784 | 2022-07-11 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2100721 | 2022-07-11 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Squid-cache Search vendor "Squid-cache" | Squid Search vendor "Squid-cache" for product "Squid" | >= 3.0 <= 3.5.28 Search vendor "Squid-cache" for product "Squid" and version " >= 3.0 <= 3.5.28" | - |
Affected
| ||||||
| Squid-cache Search vendor "Squid-cache" | Squid Search vendor "Squid-cache" for product "Squid" | >= 4.0 <= 4.17 Search vendor "Squid-cache" for product "Squid" and version " >= 4.0 <= 4.17" | - |
Affected
| ||||||
| Squid-cache Search vendor "Squid-cache" | Squid Search vendor "Squid-cache" for product "Squid" | >= 5.0 < 5.6 Search vendor "Squid-cache" for product "Squid" and version " >= 5.0 < 5.6" | - |
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
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0" | - |
Affected
| ||||||