CVE-2017-15887 Auth bypass in Synology CardDAV Server
Remote attackers can brute-force user credentials due to missing rate limiting on authentication attempts in Synology CardDAV Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-15887?
CVE-2017-15887 is a critical authentication bypass vulnerability in Synology CardDAV Server, published on 7 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.
Weakness: CWE-307
Which versions are affected by CVE-2017-15887?
It affects 1 product.
Products include Synology Carddav Server.
How do I fix CVE-2017-15887?
No fix has been published for CVE-2017-15887 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-15887 being exploited?
There is no known exploitation of CVE-2017-15887 in the wild and no public exploit code.
Other vulnerabilities in Synology CardDAV Server
Sources
Also known as GHSA-prqg-8whh-c62q.