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Bug 794508 (CVE-2021-33500) - <net-misc/putty-0.75: potential GUI DoS with rapid title changes (CVE-2021-33500)
Summary: <net-misc/putty-0.75: potential GUI DoS with rapid title changes (CVE-2021-33...
Alias: CVE-2021-33500
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa?]
Depends on:
Reported: 2021-06-06 04:06 UTC by John Helmert III
Modified: 2021-07-26 07:00 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---
nattka: sanity-check-


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Description John Helmert III gentoo-dev Security 2021-06-06 04:06:21 UTC

PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other platforms for similar reasons.

Bit of a silly vulnerability but we might as well stable in a few days anyway.
Comment 1 Sam James archtester gentoo-dev Security 2021-06-06 23:18:23 UTC
amd64 done
Comment 2 Sam James archtester gentoo-dev Security 2021-06-06 23:18:55 UTC
x86 done
Comment 3 Agostino Sarubbo gentoo-dev 2021-06-07 13:19:49 UTC
sparc stable
Comment 4 Agostino Sarubbo gentoo-dev 2021-06-08 06:59:27 UTC
ppc stable
Comment 5 Agostino Sarubbo gentoo-dev 2021-06-09 06:24:45 UTC
ppc64 stable.

Maintainer(s), please cleanup.
Security, please vote.
Comment 6 NATTkA bot gentoo-dev 2021-07-26 07:00:26 UTC
Unable to check for sanity:

> no match for package: net-misc/putty-0.75