CVE-2020-15117

Denial of Service in Synergy

Description

In Synergy before version 1.12.0, a Synergy server can be crashed by receiving a kMsgHelloBack packet with a client name length set to 0xffffffff (4294967295) if the servers memory is less than 4 GB. It was verified that this issue does not cause a crash through the exception handler if the available memory of the Server is more than 4GB.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.48%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: symless synergy-core
Published at:
Updated at:

References

Link Tags
https://github.com/symless/synergy-core/security/advisories/GHSA-chfm-333q-gfpp third party advisory
https://github.com/symless/synergy-core/commit/0a97c2be0da2d0df25cb86dfd642429e7a8bea39 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VFDEQED64YLWQK2TF73EMXZDYX7YT2DD/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAQYCMBWNVCIEM27NPIKK3DGJCNBYLAK/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-15117?
CVE-2020-15117 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15117?
To fix CVE-2020-15117, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-15117 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15117 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15117?
CVE-2020-15117 affects symless synergy-core.
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