SB2017123001 - Debian update for thunderbird
Published: December 30, 2017
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2017-7826)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to unspecified boundary errors when processing web pages. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Use-after-free (CVE-ID: CVE-2017-7828)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error when flushing and resizing layout because the PressShell object has been freed while still in use. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into opening it and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Spoofing attack (CVE-ID: CVE-2017-7829)
The vulnerability allows a remote attacker to spoof browser address bar.
The vulnerability exists due to encoded null character is cut off in message header display. A remote attacker can spoof the sender's email address and display an arbitrary sender address to the email recipient.
4) Cross-origin information disclosure (CVE-ID: CVE-2017-7830)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an error when processing cross-origin iframes in the Resource Timing API. A remote attacker can gain access to data, related to another URL.
5) Cross-site scripting (CVE-ID: CVE-2017-7846)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
6) Memory leak (CVE-ID: CVE-2017-7847)
The disclosed vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to leak of local path string from specially crafted CSS and RSS feed. A remote attacker can reveal local path strings, which may contain user name.
7) Spoofing attack (CVE-ID: CVE-2017-7848)
The disclosed vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to insufficient input validation of user-supplied values in HTTP parameters. A remote attacker can inject new lines into the created email structure via specially crafted RSS fields and modify the message body.
Remediation
Install update from vendor's website.