SB2017122209 - Multiple vulnerabilities in Mozilla Thunderbird

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2017-7845)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists on Windows systems due to an incorrect value being passed within the library during checks. A remote attacker can trick the victim into visiting a specially crafted website, trigger buffer overlow when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

2) 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.

3) 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.

4) 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.

5) 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.

Remediation

Install update from vendor's website.

References

• https://www.mozilla.org/en-US/security/advisories/mfsa2017-30/