Remote code execution in Isync
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3578 |
| CWE-ID | CWE-822 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Isync: mailbox synchronizer Other software / Other software solutions |
| Vendor | ossi |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Untrusted Pointer Dereference
EUVDB-ID: #VU54076
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3578
CWE-ID:
CWE-822 - Untrusted Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error in mbsync when processing unexpected APPENDUID response from a malicious server. A remote attacker who controls a mail server can send a specially crafted response to the client, trigger memory corruption and execute arbitrary code on the system.
Install updates from vendor's website.
Vulnerable software versionsIsync: mailbox synchronizer: 1.3.0 - 1.4.1
External linkshttp://sourceforge.net/p/isync/mailman/message/37297759/
http://sourceforge.net/p/isync/isync/ci/589d2ed4283130108df5495b5510d822282e1300/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
