CVE-2024-49769: agendaless waitress
Vulnerability summary
CVE-2024-49769 is a high (CVSS 7.5) vulnerability in agendaless waitress. EPSS estimates a 1.38% chance of exploitation in the next 30 days, higher than 71.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 12 · Related 2Timeline
- 29-10-2024PublishedVulnerability first disclosed.
- 17-11-2024Last modifiedVulnerability information updated.
Description
Waitress is a Web Server Gateway Interface server for Python 2 and 3. 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. Waitress 3.0.1 contains fixes that remove the race condition.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.38%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
0.00 pp
From 1.38% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse17 products
- python-waitress&distro=SUSE Enterprise Storage 7.1< 1.4.3-150000.3.9.1
- python-waitress&distro=SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS< 1.4.3-150000.3.9.1
- python-waitress&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 1.4.3-150000.3.9.1
- python-waitress&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 1.4.3-150000.3.9.1
- python-waitress&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 1.4.3-150000.3.9.1
Opensuse2 products
- python-waitress&distro=openSUSE Leap 15.5< 1.4.3-150000.3.9.1
- python-waitress&distro=openSUSE Tumbleweed< 3.0.1-1.1 | < 3.0.2-1.7
Agendaless1 product
- waitress< 3.0.1
Debian1 product
- waitress< 2.1.2-2+deb12u1 | < 3.0.1-1 | < 1.4.4-1.1+deb11u2
Pylons1 product
- waitress< 3.0.1
PyPI1 product
- waitress< 1ae4e894c9f76543bee06584001583fc6fa8c95c | < 3.0.1
Ubuntu1 product
- waitressAll versions (No fix recorded) | < 1.4.1-1ubuntu0.2 | < 1.4.4-1.1ubuntu1.1 | < 2.1.2-2ubuntu0.1~esm1
7 vendors · 24 products
References
16 links- github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6X Refsource CONFIRMWEBAdvisoryREPORTVendor Advisory
- github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95cX Refsource MISCWEBFIXREPORTPatch
- github.com/Pylons/waitressPACKAGE
Show all 16 references
- lists.opensuse.org/archives/…Advisory