Information disclosure in Apple macOS
CVE-2021-22925
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.049 (91.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- Apple macOS — versions 11.0, 11.0.1, 11.1
- Apple Mac OS X — versions 10.15.7
- Haxx Curl
- NetApp Cloud Backup
- NetApp Clustered Data Ontap
- NetApp H300e
- NetApp H300e Firmware
- NetApp H300s
- NetApp H300s Firmware
- NetApp H410s
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1223882 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2021/Sep/40 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2021/Sep/39 (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)
- support.apple.com/kb/HT212805 (Third Party Advisory)
- support.apple.com/kb/HT212804 (Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2022.html (Patch, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22925?
- CVE-2021-22925 is a medium-severity vulnerability in Apple macOS, classified under Information Disclosure. CVSS score: 5.3/10. Published 2021-08-05.
- How severe is CVE-2021-22925?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-22925 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.