Buffer overflow in Vapor
CVE-2022-31019
Vapor is a server-side Swift HTTP web framework. When using automatic content decoding an attacker can craft a request body that can make the server crash with the following request: `curl -d "array[_0][0][array][_0][0][array]$(for f in $(seq 1100); do echo -n '[_0][0][array]'; done)[string][_0]=hello%20world" http://localhost:8080/foo`. The issue is unbounded, attacker controlled stack growth which will at some point lead to a stack overflow and a process crash. This issue has been fixed in version 4.61.1.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Vapor — versions < 4.61.1
Weakness classification (CWE)
References
- github.com/vapor/vapor/security/advisories/GHSA-qvxg-wjxc-r4gg (Third Party Advisory, Mitigation)
- github.com/vapor/vapor/commit/6c63226a4ab82ce53730eb1afb9ca63866fcf033 (Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-31019?
- CVE-2022-31019 is a high-severity vulnerability in Vapor, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-06-09.
- How severe is CVE-2022-31019?
- High severity. CVSS v3 base score is 7.5 out of 10.