CVE-2024-49769
HIGH7.5EPSS 1.5%Waitress vulnerable to DoS leading to high CPU usage/resource exhaustion
描述
### Impact When a remote client closes the connection before waitress has had the opportunity to call `getpeername()` waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. ### Patches Waitress 3.0.1 contains fixes that remove the race condition. ### Workarounds No work-around. ### References - https://github.com/Pylons/waitress/issues/418 - https://github.com/Pylons/waitress/pull/435
受影響套件(4)
- Debian/waitressfrom 0, < 1.4.4-1.1+deb11u2
- Debian/waitressfrom 0, < 1.4.4-1.1+deb11u2
- PyPI/waitressfrom 0, < 3.0.1
- PyPI/waitressfrom 0, < 1ae4e894c9f76543bee06584001583fc6fa8c95c | from 0, < 3.0.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
參考連結(9)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-49769
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-49769
- PATCHhttps://github.com/Pylons/waitress
- WEBhttps://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c
- WEBhttps://github.com/Pylons/waitress/issues/418
- WEBhttps://github.com/Pylons/waitress/pull/435
- WEBhttps://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/waitress/PYSEC-2024-211.yaml
- WEBhttps://lists.debian.org/debian-lts-announce/2024/11/msg00012.html