Description
The am_read_post_data function in mod_auth_mellon before 0.11.1 does not check if the ap_get_client_block function returns an error, which allows remote attackers to cause a denial of service (segmentation fault and process crash) via a crafted POST data.
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 | libapache2-mod-auth-mellon | 0.12.0-1 | — |
| Debian 13 | libapache2-mod-auth-mellon | 0.12.0-1 | — |
| Debian 12 | libapache2-mod-auth-mellon | 0.12.0-1 | — |