CVE-2020-15117— Denial of Service in Synergy
Quick assessment
Affected
symless synergy-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Synergy 1.12.0之前版本中存在安全漏洞。攻击者可利用该漏洞导致Synergy服务器崩溃。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2020-15117
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Denial of Service in Synergy
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Synergy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Synergy 1.12.0之前版本中存在安全漏洞。攻击者可利用该漏洞导致Synergy服务器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| symless | synergy-core | < 1.12.0 | - |
|
II. Public POCs for CVE-2020-15117
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2020-15117
请登录查看更多情报信息。
Patches & Fixes for CVE-2020-15117 (1)
Vendor Advisories for CVE-2020-15117 (1)
-
https://github.com/symless/synergy-core/security/advisories/GHSA-chfm-333q-gfpp x_refsource_CONFIRM
Mailing List Discussions for CVE-2020-15117 (2)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAQYCMBWNVCIEM27NPIKK3DGJCNBYLAK/ vendor-advisory x_refsource_FEDORA
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VFDEQED64YLWQK2TF73EMXZDYX7YT2DD/ vendor-advisory x_refsource_FEDORA
IV. Related Vulnerabilities
Same weakness: CWE-755
-
CVE-2026-63450
Suricata ftp: RETR/STOR before PORT/PASV can disable further -
CVE-2026-81515
Steeltoe.Discovery.Eureka: malformed enum/bool/timestamp fie -
CVE-2026-81516
Steeltoe.Discovery.Consul: malformed 'secure' metadata abort -
CVE-2026-89025
Hirschmann HiOS Switch Platform DoS via Malformed HTTP Reque -
CVE-2026-49305
Huawei HarmonyOS 异常处理不当漏洞
V. Comments for CVE-2020-15117
No comments yet