PPP: Buffer overflow — GLSA 202003-19

A buffer overflow in PPP might allow a remote attacker to execute arbitrary code.

Affected packages

net-dialup/ppp on all architectures
Affected versions < 2.4.8
Unaffected versions >= 2.4.8

Background

PPP is a Unix implementation of the Point-to-Point Protocol.

Description

It was discovered that bounds check in PPP for the rhostname was improperly constructed in the EAP request and response functions.

Impact

A remote attacker, by sending specially crafted authentication data, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All PPP users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-dialup/ppp-2.4.8"
 

References

Release date
March 15, 2020

Latest revision
March 15, 2020: 1

Severity
high

Exploitable
remote

Bugzilla entries