CVE-2013-4548: The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data… | LiveThreat CVE Feed — Verisq

Login Request a demo

Unscored severity · published Nov 8, 2013

CVE-2013-4548

The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data…

–

CVSS

2.7%

EPSS

No

On KEV

Description

The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address.

Exploitation

Is it being used?

Exploit prediction (EPSS)2.7% · higher than 86% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

OP

Openssh · Openbsd

6.2; 6.3 · source: NVD

Affected product

OP

Openssh

Openbsd

All Openssh CVEs

References

https://nvd.nist.gov/vuln/detail/CVE-2013-4548

https://www.cve.org/CVERecord?id=CVE-2013-4548

lists.opensuse.org

http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html

http://marc.info/?l=bugtraq&m=141576985122836&w=2

http://openwall.com/lists/oss-security/2013/11/08/3

Vendor Advisory

http://www.openssh.com/txt/gcmrekey.adv

http://www.ubuntu.com/usn/USN-2014-1

More from Openssh

9.8

The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an…

9.8

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints

9.8

The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows…

9.8

OpenSSH 5.6 and earlier, when J-PAKE is enabled, does not properly validate the public parameters in the J-PAKE protocol, which allows remote attackers to bypass the need for…

9.8

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication)…