Out-of-bounds read In libvncserver
Description
LibVNCServer versions 0.9.15 and prior (fixed in commit 009008e) contain a heap out-of-bounds read vulnerability in the UltraZip encoding handler that allows a malicious VNC server to cause information disclosure or application crash. Attackers can exploit improper bounds checking in the HandleUltraZipBPP() function by manipulating subrectangle header counts to read beyond the allocated heap buffer.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 rpm rhel6 | - | - | |
rpm rhel8 | - | - | |
rpm rhel9 | - | - | |
 debian 12 | 0.9.14+dfsg-1+deb12u1 | ||
debian 11 | - | ||
debian 13 | 0.9.15+dfsg-1+deb13u1 | ||
debian 14 | 0.9.15+dfsg-3 |
Aliases
1. 2. 3. 4. 5.