Description
ELOG 3.1.4-57bea22 and below is affected by a denial of service vulnerability due to a use after free. A remote unauthenticated attacker can crash the ELOG server by sending multiple HTTP POST requests which causes the ELOG function retrieve_url() to use a freed variable.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | ELOG | ELOG 3.1.4-57bea22 and below | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | elog | No fix yet | — |
| Ubuntu 20.04 LTS | elog | No fix yet | — |
| Ubuntu 18.04 LTS | elog | No fix yet | — |
| Ubuntu 16.04 LTS | elog | No fix yet | — |
References
- https://www.tenable.com/security/research/tra-2019-53
- FEDORA-2020-9f8bc040c8 vendor-advisory
- FEDORA-2020-f49fe7f011 vendor-advisory