CVE-2017-18640
HIGH
7.5
CVSS Score
Published: December 12, 2019 at 12:00 AM UTC
Updated: June 17, 2026 at 01:13 AM UTC
4 products affected across 4 vendorsFedoraPeopleSoft Enterprise PT PeopleToolsQuarkus
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Severity
HIGH7.5
Exploit prediction
EPSS 27%
Description
The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 1.26
Affected range stops below 1.26, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://bitbucket.org/asomov/snakeyaml/issues/377/allow-configuration-for-preventing-billion
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKN7VGIKTYBCAKYBRG55QHXAY5UDZ7HA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTVJC54XGX26UJVVYCXZ7D25X3R5T2G6/
- https://security.gentoo.org/glsa/202305-28
- https://www.oracle.com/security-alerts/cpuApr2021.html
References (59)
ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bitbucket.org/asomov/snakeyaml/issues/377/allow-configuration-for-preventing-billionThird Party Advisory
Source: [email protected]
https://bitbucket.org/asomov/snakeyaml/wiki/Billion%20laughs%20attackExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://bitbucket.org/snakeyaml/snakeyaml/issues/377Release NotesThird Party Advisory
Source: [email protected]
https://bitbucket.org/snakeyaml/snakeyaml/wiki/ChangesCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-776
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