XXE in Oracle Peoplesoft Enterprise Pt Peopletools
CVE-2017-18640
The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.
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: 0.267 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.267 · newest: 0.267 · change: 0.000
Affected products
- Oracle Peoplesoft Enterprise Pt Peopletools — versions 8.56, 8.57, 8.58
- Quarkus
- Snakeyaml Project
- Fedoraproject Fedora — versions 31, 32
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.apache.org/thread.html/r8b57c57cffa01e418868a3c7535b987635ff1fb5ab534203b… (mailing-list)
- lists.apache.org/thread.html/rb34d8d3269ad47a1400f5a1a2d8310e13a80b6576ebd7f512… (mailing-list)
- lists.apache.org/thread.html/r8464b6ec951aace8c807bac9ea526d4f9e3116aa16d38be06… (mailing-list)
- lists.apache.org/thread.html/r643ba53f002ae59068f9352fe1d82e1b6f375387ffb776f13… (mailing-list)
- lists.apache.org/thread.html/r2b05744c0c2867daa5d1a96832965b7d6220328b0ead06c22… (mailing-list)
- lists.apache.org/thread.html/r6c91e52b3cc9f4e64afe0f34f20507143fd1f756d12681a56… (mailing-list)
- lists.apache.org/thread.html/r72a3588d62b2de1361dc9648f5d355385735e47f7ba49d089… (mailing-list)
- lists.apache.org/thread.html/r1dfac8b6a7097bcb4979402bbb6e2f8c36d0d9001e3018717… (mailing-list)
Frequently asked questions
- What is CVE-2017-18640?
- CVE-2017-18640 is a high-severity vulnerability in Oracle Peoplesoft Enterprise Pt Peopletools, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2019-12-12.
- How severe is CVE-2017-18640?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-18640 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.