CVE-2018-15542 Auth bypass in n/a

Medium 6.4 Published Updated

An attacker with root access can bypass the Telegram Android app's passcode lock by manipulating runtime method return values.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-15542?

CVE-2018-15542 is a medium-severity authentication bypass vulnerability in n/a, published on 9 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. The Passcode feature allows authentication bypass via runtime manipulation that forces a certain method's return value to true. In other words, an attacker could authenticate with an arbitrary passcode. NOTE: the vendor indicates that this is not an attack of interest within the context of their threat model, which excludes Android devices on which rooting has occurred

Weakness: CWE-287

Which versions are affected by CVE-2018-15542?

It affects 1 product.

Products include Telegram Telegram.

How do I fix CVE-2018-15542?

No fix has been published for CVE-2018-15542 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-15542 being exploited?

There is no known exploitation of CVE-2018-15542 in the wild and no public exploit code.

Sources

Also known as GHSA-qqj6-f5mm-g546.

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