This security advisory describes one low risk vulnerability.

1) Path traversal

Severity: Low

CVSSv3:
7.1 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2018-14355

CWE-ID:
CWE-22 – Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’)

Exploit availability:
No

Description


The vulnerability allows a remote attacker to obtain potentially sensitive information cause DoS condition on the target system.


The vulnerability exists due to imap/util.c mishandles “..” directory traversal in a mailbox name. A remote attacker can conduct directory traversal attack and gain access to arbitrary data or cause the service to crash.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

mutt (Red Hat package):
1.5.21-28.el7_5

Red Hat Enterprise Linux for Power, little endian:
7

Red Hat Enterprise Linux for Power, big endian:
7

Red Hat Enterprise Linux for IBM z Systems:
7

Red Hat Enterprise Linux for Scientific Computing:
7

Red Hat Enterprise Linux Desktop:
7

Red Hat Enterprise Linux Workstation:
7

Red Hat Enterprise Linux Server:
7

CPE
External links

https://access.redhat.com/errata/RHSA-2020:1126

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.





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