Vulnerability in Haxx Curl
CVE-2021-22922
When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting the contents has been breached and the contentsof the specific file on that server is replaced with a modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload. It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the file ondisk.
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:H/A:N.
EPSS exploit prediction
EPSS: 0.043 (90.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1213175 (Exploit, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55… (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55… (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111… (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111… (mailing-list, Mailing List, Third Party Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210902-0003/ (Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202212-01 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22922?
- CVE-2021-22922 is a medium-severity vulnerability in Haxx Curl, classified under CWE-840. CVSS score: 6.5/10. Published 2021-08-05.
- How severe is CVE-2021-22922?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-22922 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.