CVE-2021-3578

Gentoo Linux Security Advisory 202208-15

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.

Se ha encontrado un fallo en mbsync versiones anteriores a v1.3.6 y v1.4.2, en el que un reparto de punteros no comprobado permite a un servidor malicioso o comprometido escribir un valor entero arbitrario más allá del final de una estructura asignada a la pila emitiendo una respuesta APPENDUID no esperada. Esto podría ser explotado de forma plausible para una ejecución de código remota en el cliente

Multiple vulnerabilities have been discovered in isync, the worst of which could result in arbitrary code execution. Versions less than 1.4.4 are affected.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-03 CVE Reserved
2022-02-16 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-704: Incorrect Type Conversion or Cast

CAPEC

References (9)

URL	Tag	Source
https://bugzilla.redhat.com/show_bug.cgi?id=1961710	Not Applicable
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug	Not Applicable
https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2021/06/07/1	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=1967397	2023-11-07
https://www.openwall.com/lists/oss-security/2021/06/07/1	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPIDLIJKNRJHUVBCL7QGAPAAVPIHQGXK	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U75UFEWRAZYKVL5NHMPBUOLWN3WXTOEI	2023-11-07
https://security.gentoo.org/glsa/202208-15	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Isync Project Search vendor "Isync Project"		Isync Search vendor "Isync Project" for product "Isync"				< 1.3.6 Search vendor "Isync Project" for product "Isync" and version " < 1.3.6"		-		Affected
Isync Project Search vendor "Isync Project"		Isync Search vendor "Isync Project" for product "Isync"				1.4.0 Search vendor "Isync Project" for product "Isync" and version "1.4.0"		-		Affected
Isync Project Search vendor "Isync Project"		Isync Search vendor "Isync Project" for product "Isync"				1.4.1 Search vendor "Isync Project" for product "Isync" and version "1.4.1"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected