Telegram - Input Length Handling Denial of Service Vulnerability

vendor:

by:

Mohammad Reza Espargham

7,5

CVSS

HIGH

Denial of Service

400

CWE

Product Name: Telegram

Affected Version From: 3.2

Affected Version To: 3.2

Patch Exists: YES

Related CWE: N/A

CPE: a:telegram:telegram

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: IOS

2015

Telegram – Input Length Handling Denial of Service Vulnerability

A denial of service vulnerability exists in Telegram 3.2 on IOS 9.0.1 when a user pastes 5000 X “A” in their contact name. This causes the application to crash.

Mitigation:

Upgrade to the latest version of Telegram.

Source

Exploit-DB raw data:

#[+] Title:  Telegram - Input Length Handling Denial of Service Vulnerability
#[+] Product: Telegram
#[+] Vendor: http://telegram.org/
#[+] SoftWare Link : https://itunes.apple.com/en/app/telegram-messenger/id686449807?mt=8
#[+] Vulnerable Version(s): Telegram 3.2 on IOS 9.0.1
#
#
# Author      :   Mohammad Reza Espargham
# Linkedin    :   https://ir.linkedin.com/in/rezasp
# E-Mail      :   me[at]reza[dot]es , reza.espargham[at]gmail[dot]com
# Website     :   www.reza.es
# Twitter     :   https://twitter.com/rezesp
# FaceBook    :   https://www.facebook.com/mohammadreza.espargham 

#Demo : https://youtu.be/fszP8jyJN0M

# 1. open your phone contacts / add contact
# 2. Past 5000 X “A” in your contact name / save contact 
# 3. Open telegram and goto “Contact"
# 4. Crashed ;)



Debug Report

{"app_name":"Telegram","timestamp":”2015-xx-xx","app_version":"3.2":"ph.telegra.Telegraph","share_with_app_devs":false,"is_first_party":false"os_version":"iPhone OS 9.0.1 (13A404)","name":"Telegram"}
Incident Identifier: xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx
CrashReporter Key: 7e3613t9t457ge3a2en22fc58e7rr44r49311297
Hardware Model: iPhone6,1
Process: Telegram [616]
Path: /private/var/mobile/Containers/Bundle/Application/xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx/Telegram.app/Telegram
Identifier: ph.telegra.Telegraph
Code Type: ARM-64 (Native)
Parent Process: launchd [1]

Date/Time: 2015-xx-xx 03:12:02.02
Launch Time: 2015-xx-xx 23:03:12.12
OS Version: iOS 9.0.1 (13A404)

Exception Type: EXC_CRASH (SIGILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 0

Filtered syslog:
None found

Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x000000019b578c30 0x19b578000 + 3120
1 libsystem_kernel.dylib 0x000000019b578aac 0x19b578000 + 2732
2 CoreFoundation 0x0000000186100168 0x186024000 + 901480
3 CoreFoundation 0x00000001860fde6c 0x186024000 + 892524
4 CoreFoundation 0x000000018602cdc0 0x186024000 + 36288
5 GraphicsServices 0x0000000191180088 0x191174000 + 49288
6 UIKit 0x000000018b706f60 0x18b68c000 + 503648
7 Telegram 0x0000000100016f70 0x100000000 + 94064
8 libdyld.dylib 0x000000019b4768b8 0x19b474000 + 10424

Activity ID: 0x0000000000042ea5
Activity Name: send control actions
Activity Image Path: /System/Library/Frameworks/UIKit.framework/UIKit
Activity Offset: 0x00032b34
Activity Running Time: 0.980331 sec