CVE-2015-3644 Auth bypass in n/a
Remote attackers can bypass authentication in Stunnel when the redirect option is enabled, allowing unauthorized access to protected services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-3644?
CVE-2015-3644 is a medium-severity authentication bypass vulnerability in n/a, published on 14 May 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authentication.
Weakness: CWE-284
Which versions are affected by CVE-2015-3644?
It affects 1 product.
Linux distribution packages (3)
stunnel SUSE:Linux Enterprise Server 12 | All versions | 5.00-3.1 |
stunnel SUSE:Linux Enterprise Server for SAP Applications 12 | All versions | 5.00-3.1 |
stunnel openSUSE:Tumbleweed | All versions | 5.65-1.1 |
Products include Stunnel Stunnel.
How do I fix CVE-2015-3644?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2015-3644 being exploited?
There is no known exploitation of CVE-2015-3644 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2001-0060 Other in n/a
- CVE-2011-2940 Memory corruption in n/a
- CVE-2021-20230 Auth bypass in stunnel
- CVE-2008-2400 Unspecified vulnerability in stunnel before 4.23, when running as a service on Windows, allows local users to gain privileges via unknown attack vectors.
- CVE-2008-2420 Security feature bypass in n/a
Sources
Also known as DEBIAN-CVE-2015-3644, DSA-3299-1, GHSA-3w38-w685-6793, MGASA-2015-0289, SUSE-SU-2015:1062-1, openSUSE-SU-2024:12196-1.