CVE-2019-17069 — Use After Free in Putty

CWE-416 — Use After FreeCWE-20 — Improper Input Validation8 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.5%
top 35.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
PuttyDebian PuttyOpensuse Leap
Timeline
PublishedOct 1
Latest updateMay 24

Description

PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service by accessing freed memory locations via an SSH1_MSG_DISCONNECT message.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶NVDputty/putty< 0.73
▶debiandebian/putty< putty 0.73-1 (bookworm)
▶Debianputty/putty< 0.73-1+3
▶NVDopensuse/leap15.0, 15.1+1

🔴Vulnerability Details

2
GHSA
GHSA-9fg2-hvwm-63r7: PuTTY before 0↗2022-05-24
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OSV
CVE-2019-17069: PuTTY before 0↗2019-10-01
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📋Vendor Advisories

1
Debian
CVE-2019-17069: putty - PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service ...↗2019
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💬Community

4
Bugzilla
CVE-2019-17069 putty: possible access to freed memory by sending the SSH1_MSG_DISCONNECT message↗2019-11-19
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Bugzilla
CVE-2019-17069 putty: possible access to freed memory by sending the SSH1_MSG_DISCONNECT message [fedora-all]↗2019-11-19
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Bugzilla
CVE-2019-17069 putty: possible access to freed memory by sending the SSH1_MSG_DISCONNECT message [epel-7]↗2019-11-19
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Bugzilla
CVE-2019-17069 putty: possible access to freed memory by sending the SSH1_MSG_DISCONNECT message [epel-6]↗2019-11-19
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