Vulnerability · Published Jul 15, 2020 · Assigned by GitHub_M
CVE-2020-15117Denial of Service in Synergy
Medium 6.5
In plain English
A medium-severity security flaw in synergy-core from symless. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)2.5%top 15.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| symless | synergy-core | < 1.12.0 |
Weakness: CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/symless/synergy-core/security/advisories/GHSA-chfm-333q-gfpp x_refsource_CONFIRM
- https://github.com/symless/synergy-core/commit/0a97c2be0da2d0df25cb86dfd642429e7a8bea39 x_refsource_MISC
- FEDORA-2020-cc19e88a1f vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-2ef60a0580 vendor-advisory, x_refsource_FEDORA