CVE & CISA-KEV Catalog

CVE-2018-19518

HIGHEPSS 100th pctl
7.5
CVSS v3
NVD

Description

University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rsh command (by means of the imap_rimap function in c-client/imap4r1.c and the tcp_aopen function in osdep/unix/tcp_unix.c) without preventing argument injection, which might allow remote attackers to execute arbitrary OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics. For example, if rsh is a link to ssh (as seen on Debian and Ubuntu systems), then the attack can use an IMAP server name containing a "-oProxyCommand" argument.

How to fix

Remediation Available
uw-imapDebian
Fixed in:8:2007f~dfsg-6CVE-2018-19518
Fixed in:8:2007f~dfsg-6CVE-2018-19518
libc-client2007eUbuntu
Fixed in:8:2007f~dfsg-4+deb8u1build0.16.04.1USN-4160-1
Fixed in:8:2007f~dfsg-5ubuntu0.18.04.2USN-4160-1
mlockUbuntu
Fixed in:8:2007f~dfsg-4+deb8u1build0.16.04.1USN-4160-1
Fixed in:8:2007f~dfsg-5ubuntu0.18.04.2USN-4160-1
uw-imapUbuntu
Fixed in:8:2007f~dfsg-4+deb8u1build0.16.04.1USN-4160-1
Fixed in:8:2007f~dfsg-5ubuntu0.18.04.2USN-4160-1
uw-mailutilsUbuntu
Fixed in:8:2007f~dfsg-4+deb8u1build0.16.04.1USN-4160-1
Fixed in:8:2007f~dfsg-5ubuntu0.18.04.2USN-4160-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

95.23%probability of exploitation in 30 days
100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Related Vulnerabilities

Other CWE-88 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2016-10033Critical9.8100%KEVFix
CVE-2022-36804High8.899%KEVFix
CVE-2026-24061Critical9.899%KEVFix
CVE-2007-0882High10.098%--
CVE-2018-17456Critical9.897%-Fix
CVE-2021-33564Critical9.872%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.