CVE-2019-15695 Memory corruption in TigerVNC

What is CVE-2019-15695?

CVE-2019-15695 is a high-severity memory corruption vulnerability in Opensuse Leap, published on 26 Dec 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulnerability occurs due to insufficient sanitization of PixelFormat. Since remote attacker can choose offset from start of the buffer to start writing his values, exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Weakness: CWE-787, CWE-754, CWE-121

Which versions are affected by CVE-2019-15695?

It affects 2 products.

Products include Opensuse Leap, Tigervnc Tigervnc.

How do I fix CVE-2019-15695?

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-2019-15695 being exploited?

There is no known exploitation of CVE-2019-15695 in the wild and no public exploit code.

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 DEBIAN-CVE-2019-15695, GHSA-25ff-c5j2-v9ch, UBUNTU-CVE-2019-15695.