CVE-2019-15691: TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding…

PriorityP348high7.2CVSS 3.1

AVNACLPRHUINSUCHIHAH

EPSS

4.72%

90.9th percentile

TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
debian	tigervnc	< tigervnc 1.10.1+dfsg-1 (bookworm)	tigervnc 1.10.1+dfsg-1 (bookworm)
kaspersky	tigervnc	—	—
opensuse	leap	—	—
tigervnc	tigervnc	< 1.10.1	1.10.1
tigervnc	tigervnc	>= 0 < 1.10.1+dfsg-1	1.10.1+dfsg-1
tigervnc	tigervnc	>= 0 < 1.10.1+dfsg-1	1.10.1+dfsg-1
tigervnc	tigervnc	>= 0 < 1.10.1+dfsg-1	1.10.1+dfsg-1
tigervnc	tigervnc	>= 0 < 1.10.1+dfsg-1	1.10.1+dfsg-1

CVSS provenance

nvdv3.17.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvdv2.06.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

osv7.2HIGH

vendor_debian7.2HIGH

vendor_redhat7.2HIGH

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