CVE-2019-9894
published 2019-03-21CVE-2019-9894: A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
PriorityP337high7.5CVSS 3.0
AVNACLPRNUINSUCNIHAN
EPSS
2.45%
82.5th percentile
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | putty | < putty 0.70-6 (bookworm) | putty 0.70-6 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| opensuse | leap | — | — |
| putty | putty | < 0.71 | 0.71 |
| putty | putty | >= 0 < 0.70-6 | 0.70-6 |
| putty | putty | >= 0 < 0.70-6 | 0.70-6 |
| putty | putty | >= 0 < 0.70-6 | 0.70-6 |
| putty | putty | >= 0 < 0.70-6 | 0.70-6 |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
nvdv2.06.4MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P
osv7.5HIGH
vendor_debian7.5HIGH
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GHSA
GHSA-pwmv-rrj5-fgmx: A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0
ghsa_unreviewed·2022-05-14
CVE-2019-9894 [HIGH] GHSA-pwmv-rrj5-fgmx: A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
OSV
CVE-2019-9894: A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0
osv·2019-03-21·CVSS 7.5
CVE-2019-9894 [HIGH] CVE-2019-9894: A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
Debian
CVE-2019-9894: putty - A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71...
vendor_debian·2019·CVSS 7.5
CVE-2019-9894 [HIGH] CVE-2019-9894: putty - A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71...
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
Scope: local
bookworm: resolved (fixed in 0.70-6)
bullseye: resolved (fixed in 0.70-6)
forky: resolved (fixed in 0.70-6)
sid: resolved (fixed in 0.70-6)
trixie: resolved (fixed in 0.70-6)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities
bugzilla·2019-03-19·CVSS 7.5
CVE-2019-9894 [HIGH] CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities
The following security issue has been discovered in putty < 0.71:
* a remotely triggerable memory overwrite in RSA key exchange, which can occur before host key verification
* potential recycling of random numbers used in cryptography
* on Unix, remotely triggerable buffer overflow in any kind of server-to-client forwarding
* multiple denial-of-service attacks that can be triggered by writing to the terminal
* Other security enhancements: major rewrite of the crypto code to remove cache and timing side channels
Reference:
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
Upstream commit:
https://build.opensuse.org/request/show/685782
Discussion:
External References:
https://www.chiar
Bugzilla
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [epel-all]
bugzilla·2019-03-19·CVSS 7.5
CVE-2019-9894 [HIGH] CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [epel-all]
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple
Bugzilla
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [fedora-all]
bugzilla·2019-03-19·CVSS 7.5
CVE-2019-9894 [HIGH] CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [fedora-all]
CVE-2019-9894 CVE-2019-9895 CVE-2019-9898 CVE-2019-9897 putty: multiple vulnerabilities [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects mult
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00004.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00020.htmlhttps://lists.debian.org/debian-lts-announce/2019/04/msg00023.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LDO3F267P347E6U2IILFCYW7JPTLCCES/https://seclists.org/bugtraq/2019/Apr/6https://security.netapp.com/advisory/ntap-20190404-0001/https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.htmlhttps://www.debian.org/security/2019/dsa-4423http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00004.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00020.htmlhttps://lists.debian.org/debian-lts-announce/2019/04/msg00023.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LDO3F267P347E6U2IILFCYW7JPTLCCES/https://seclists.org/bugtraq/2019/Apr/6https://security.netapp.com/advisory/ntap-20190404-0001/https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.htmlhttps://www.debian.org/security/2019/dsa-4423
2019-03-21
Published