Resource exhaustion in Haxx Curl
CVE-2022-27781
libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.
Vulnerability class: DoS (Denial of Service)
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: 0.029 (86.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.029 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1555441 (Exploit, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220609-0009/ (Third Party Advisory)
- www.debian.org/security/2022/dsa-5197 (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/08/msg00017.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202212-01 (vendor-advisory, Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2022-27781?
- CVE-2022-27781 is a high-severity vulnerability in Haxx Curl, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-06-02.
- How severe is CVE-2022-27781?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-27781 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.