Resource exhaustion in Haxx Curl
CVE-2022-32206
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.331 (98.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.322 · newest: 0.331 · change: +0.009
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1570651 (Exploit, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5197 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/08/msg00017.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220915-0003/ (Third Party Advisory)
- support.apple.com/kb/HT213488 (Third Party Advisory)
- seclists.org/fulldisclosure/2022/Oct/41 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2022/Oct/28 (mailing-list, Mailing List, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202212-01 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-32206?
- CVE-2022-32206 is a medium-severity vulnerability in Haxx Curl, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2022-07-07.
- How severe is CVE-2022-32206?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-32206 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.