CVE-2020-15117
MEDIUMSynergy < 1.12.0 - Denial of Service via Malformed kMsgHelloBack Packet
Title source: llmDescription
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.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_confirm
https://github.com/symless/synergy-core/security/advisories/GHSA-chfm-333q-gfpp
Patch, Third Party Advisory x_refsource_misc
https://github.com/symless/synergy-core/commit/0a97c2be0da2d0df25cb86dfd642429e7a8bea39
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VFDEQED64YLWQK2TF73EMXZDYX7YT2DD/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAQYCMBWNVCIEM27NPIKK3DGJCNBYLAK/
Scores
CVSS v3
6.5
EPSS
0.0249
EPSS Percentile
82.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-755
CWE-754
Status
published
Products (3)
fedoraproject/fedora
32
fedoraproject/fedora
33
symless/synergy
< 1.12.0
Published
Jul 15, 2020
Tracked Since
Feb 18, 2026