CVE-2020-27853

Wire before 2020-10-16 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a format string

published October 27, 2020

CVSS
—
EPSS
4%
Percentile
90.4
In the wild
Unconfirmed
What it is

⚠️ A crafty format string vulnerability lurks in Wire, sneaking up to crash your app or even execute arbitrary code with just the right input! 😱 Think of this vulnerability like a poorly written recipe that unexpectedly makes the dish explode instead of cooking it! A tiny tweak in the input can lead to a chaotic outcome that could crash your dinner party—or in this case, your application. If exploited, an attacker could cause a denial of service, leading to application crashes or even arbitrary code execution. Imagine your users being unable to send messages or access their app, creating a world of frustration. It's not a full-blown disaster, but it's definitely a headache for anyone relying on Wire.

Put simply

Think of this vulnerability like a poorly written recipe that unexpectedly makes the dish explode instead of cooking it! A tiny tweak in the input can lead to a chaotic outcome that could crash your dinner party—or in this case, your application. The vulnerability arises in the Wire AVS and Secure Messenger applications due to improper handling of the value parameter in the sdp_media_set_lattr function, allowing attackers to manipulate format strings.

What to do

If exploited, an attacker could cause a denial of service, leading to application crashes or even arbitrary code execution. Imagine your users being unable to send messages or access their app, creating a world of frustration. It's not a full-blown disaster, but it's definitely a headache for anyone relying on Wire. Make sure to patch your Wire applications to version 6.4 or above for AVS and to versions 3.49.918 for Android and 3.61 for iOS. Regularly update your software and audit your systems for vulnerable dependencies to ensure ongoing security. You've got this! Patch up and keep your apps running smoothly! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03942 · 90.4th percentile
Published
2020-10-27T17:53Z
EPSS history
Timeline
  • 27 OCT 17:53Z
    Wire before 2020-10-16 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a format string
    cvelistv5