CVE-2019-8287: TightVNC code version 1.3.10 contains global buffer overflow in HandleCoRREBBP macro function, which can potentially result code execution. This attack appear…

PriorityP261critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

19.46%

97.0th percentile

TightVNC code version 1.3.10 contains global buffer overflow in HandleCoRREBBP macro function, which can potentially result code execution. This attack appear to be exploitable via network connectivity.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
debian	tightvnc	< tightvnc 1:1.3.9-9.1 (bookworm)	tightvnc 1:1.3.9-9.1 (bookworm)
kaspersky	tightvnc	—	—
tightvnc	tightvnc	—	—
tightvnc	tightvnc	>= 0 < 1:1.3.9-9.1	1:1.3.9-9.1
tightvnc	tightvnc	>= 0 < 1:1.3.9-9.1	1:1.3.9-9.1
tightvnc	tightvnc	>= 0 < 1:1.3.9-9.1	1:1.3.9-9.1
tightvnc	tightvnc	>= 0 < 1:1.3.9-9.1	1:1.3.9-9.1

Detection & IOCsextracted from sources · hover to see the quote

→CVE-2019-8287 is a global buffer overflow in the HandleCoRREBBP macro function in TightVNC 1.3.10, exploitable via network connectivity and potentially resulting in code execution. ↗
→Target the HandleCoRREBBP macro function in TightVNC v1.x client code as the vulnerable code path for this overflow; network-delivered RFB/VNC protocol messages triggering CoRRE encoding handling are the attack vector. ↗
→CVSS v3 base score 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) — unauthenticated, network-exploitable, no user interaction required; prioritize detection at the network perimeter for VNC traffic. ↗

·Debian fixed this vulnerability in package version 1:1.3.9-9.1 across bookworm, bullseye, forky, sid, and trixie; note the fixed package version is 1.3.9-9.1 (a patched 1.3.9 package), not 1.3.10. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

osv9.8CRITICAL

vendor_debian9.8CRITICAL

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