Entity Expansion Vulnerability in SnakeYAML Affects Multiple Products
CVE-2017-18640

7.5HIGH

Key Information:

Vendor

Snakeyaml Project

Status
Snakeyaml
Vendor
CVE Published:
12 December 2019

What is CVE-2017-18640?

The SnakeYAML library prior to version 1.26 contains a vulnerability that permits entity expansion during a load operation. This could lead to potential denial of service due to resource exhaustion, making applications utilizing affected versions susceptible to attacks that exploit this flaw, similar to previous exploits like CVE-2003-1564. It is recommended to upgrade to version 1.26 or higher to mitigate the risk associated with this vulnerability.

References

https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory
https://lists.apache.org/thread.html/r8b57c57cffa01e41886...
mailing-list

EPSS Score

26% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.