CVE-2024-49769

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-49769
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-49769.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-49769
Aliases
Downstream
Related
Published
2024-10-29T14:18:40.951Z
Modified
2025-12-01T02:14:12.209408Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Waitress has a denial of service leading to high CPU usage/resource exhaustion
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49769.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-772"
    ]
}
References

Affected packages

Git / github.com/pylons/waitress

Affected ranges

Type
GIT
Repo
https://github.com/pylons/waitress
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ae949bb428e50cf04152db56460f31c1e6d3a2a9

Affected versions

0.*

0.1
0.2
0.3
0.4
0.5
0.6
0.6.1
0.7
0.8
0.8.1
0.8.10
0.8.11b0
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0b0

v0.*

v0.9.0
v0.9.0b1

v1.*

v1.0.0
v1.0.1
v1.0.2
v1.0a1
v1.0a2
v1.1.0
v1.2.0
v1.2.0b1
v1.2.0b2
v1.2.0b3
v1.2.1
v1.3.0
v1.3.0b0
v1.3.1
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.4.4

v2.*

v2.0.0
v2.0.0b0
v2.0.0b1
v2.1.0
v2.1.0b0
v2.1.1
v2.1.2

v3.*

v3.0.0