Mozilla Thunderbird up to 60.7.0 iCal icalmemory_strdup_and_dequote Email Message memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Mozilla Thunderbird up to 60.7.0. The affected element is the function icalmemory_strdup_and_dequote of the component iCal Handler. The manipulation as part of Email Message leads to memory corruption. This vulnerability is referenced as CVE-2019-11704. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Thunderbird up to 60.7.0 (Mail Client Software). This issue affects the function icalmemory_strdup_and_dequote of the component iCal Handler. The manipulation as part of a Email Message leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.

The weakness was published 07/23/2019 (Website). The advisory is shared at security.gentoo.org. The identification of this vulnerability is CVE-2019-11704 since 05/03/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176982 (Debian Security Update for thunderbird (DSA 4464-1)).

Upgrading to version 60.7.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (47002). Similar entries are available at VDB-138484, VDB-138486 and VDB-138487. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Mail Client Software

Vendor

• Mozilla

Name

• Thunderbird

Version

• 60.0
• 60.1
• 60.2
• 60.3
• 60.4
• 60.5
• 60.6
• 60.7.0

License

• open-source

Website

• Vendor: https://www.mozilla.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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