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.
Weakness
The product does not correctly convert an object, resource, or structure from one type to a different type.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Isync | Isync_project | * | 1.3.6 (excluding) |
| Isync | Isync_project | 1.4.0 (including) | 1.4.0 (including) |
| Isync | Isync_project | 1.4.1 (including) | 1.4.1 (including) |
| Isync | Ubuntu | bionic | * |
| Isync | Ubuntu | focal | * |
| Isync | Ubuntu | groovy | * |
| Isync | Ubuntu | hirsute | * |
| Isync | Ubuntu | impish | * |
| Isync | Ubuntu | kinetic | * |
| Isync | Ubuntu | lunar | * |
| Isync | Ubuntu | mantic | * |
| Isync | Ubuntu | oracular | * |
| Isync | Ubuntu | plucky | * |
| Isync | Ubuntu | trusty | * |
| Isync | Ubuntu | xenial | * |
References
- http://www.openwall.com/lists/oss-security/2021/06/07/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://bugzilla.redhat.com/show_bug.cgi?id=1967397
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPIDLIJKNRJHUVBCL7QGAPAAVPIHQGXK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U75UFEWRAZYKVL5NHMPBUOLWN3WXTOEI/
- https://security.gentoo.org/glsa/202208-15
- https://www.openwall.com/lists/oss-security/2021/06/07/1
- http://www.openwall.com/lists/oss-security/2021/06/07/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1961710
- https://bugzilla.redhat.com/show_bug.cgi?id=1967397
- https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
- https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPIDLIJKNRJHUVBCL7QGAPAAVPIHQGXK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U75UFEWRAZYKVL5NHMPBUOLWN3WXTOEI/
- https://security.gentoo.org/glsa/202208-15
- https://www.openwall.com/lists/oss-security/2021/06/07/1