Vulnerability in Oracle Peoplesoft Enterprise Peopletools
CVE-2021-28363
The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.022 (81.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.022 · change: +0.001
Affected products
- Oracle Peoplesoft Enterprise Peopletools — versions 8.59
- Python Urllib3
- Fedoraproject Fedora — versions 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/urllib3/urllib3/commits/main (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202107-36 (vendor-advisory, Third Party Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
- pypi.org/project/urllib3/1.26.4/ (Third Party Advisory)
- github.com/urllib3/urllib3/commit/8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0 (Patch, Third Party Advisory)
- github.com/urllib3/urllib3/security/advisories/GHSA-5phf-pp7p-vc2r (Third Party Advisory, Mitigation)
- security.gentoo.org/glsa/202305-02 (vendor-advisory)
- security.netapp.com/advisory/ntap-20240621-0007/
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2021-28363?
- CVE-2021-28363 is a medium-severity vulnerability in Oracle Peoplesoft Enterprise Peopletools, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2021-03-15.
- How severe is CVE-2021-28363?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-28363 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.