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Files from Juniper Networks

First Active2019-07-24
Last Active2019-07-24
FreeBSD Security Advisory - FreeBSD-SA-19:12.telnet
Posted Jul 24, 2019
Authored by Juniper Networks | Site security.freebsd.org

FreeBSD Security Advisory - Insufficient validation of environment variables in the telnet client supplied in FreeBSD can lead to stack-based buffer overflows. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client. Inbound telnet sessions to telnetd(8) are not affected by this issue. These buffer overflows may be triggered when connecting to a malicious server, or by an active attacker in the network path between the client and server. Specially crafted TELNET command sequences may cause the execution of arbitrary code with the privileges of the user invoking telnet(1).

tags | advisory, remote, overflow, arbitrary
systems | freebsd, bsd
advisories | CVE-2019-0053
SHA-256 | a289c2b38135f9f6339c9294178d141344dcea0087e3ea2bfa204b3700f119d5
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