CVE-2017-6542 Memory corruption in n/a

What is CVE-2017-6542?

CVE-2017-6542 is a critical memory corruption vulnerability in Opensuse Leap, published on 27 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.

Weakness: CWE-119

Which versions are affected by CVE-2017-6542?

It affects 3 products.

Products include Opensuse Leap, Opensuse Project Leap, Putty Putty.

How do I fix CVE-2017-6542?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-6542 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-6542 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Opensuse Leap

• CVE-2015-4902 Oracle Java SE Integrity Check Exploited Medium 5.3
• CVE-2017-14804 package builds could use directory traversal to write outside of target area Critical 9.9
• CVE-2019-20787 Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size. Critical 9.8
• CVE-2019-8341 Code injection in n/a Critical 9.8
• CVE-2019-6438 Other in n/a Critical 9.8

All Opensuse Leap vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2017-6542, DEBIAN-CVE-2017-6542, GHSA-6q3h-v425-7xx2, MGASA-2017-0093, UBUNTU-CVE-2017-6542.