Description
In imap_scan_tree_recursive in Claws Mail through 3.17.6, a malicious IMAP server can trigger stack consumption because of unlimited recursion into subdirectories during a rebuild of the folder tree.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | claws-mail | 3.17.7-1 | — |
| Debian 13 | claws-mail | 3.17.7-1 | — |
| Debian 12 | claws-mail | 3.17.7-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | claws-mail | No fix yet | — |
| Ubuntu 18.04 LTS | claws-mail | No fix yet | — |
| Ubuntu 16.04 LTS | claws-mail | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.23 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.22 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.21 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.20 | claws-mail | 3.17.7-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.18 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.17 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.16 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.15 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.14 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.13 | claws-mail | 3.17.7-r0 | — |
| Alpine v3.12 | claws-mail | 3.17.7-r0 | — |
References
- https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4313
- FEDORA-2020-67d9661fe2 vendor-advisory
- FEDORA-2020-90e2b01f4a vendor-advisory
- FEDORA-2020-1f60842034 vendor-advisory