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CVE-2021-29957

Status Candidate

Overview

If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected. This vulnerability affects Thunderbird < 78.10.2.

Related Files

Ubuntu Security Notice USN-4995-2
Posted Jun 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4995-2 - USN-4995-1 fixed vulnerabilities in Thunderbird. This update provides the corresponding updates for Ubuntu 18.04 LTS. Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, spoof the UI, bypass security restrictions, or execute arbitrary code. It was discovered that extensions could open popup windows with control of the window title in some circumstances. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to spoof a website and trick the user into providing credentials. Multiple security issues were discovered in Thunderbird's OpenPGP integration. If a user were tricked into importing a specially crafted key in some circumstances, an attacker could potentially exploit this to cause a denial of service or confuse the user. A use-after-free was discovered when Responsive Design Mode was enabled. If a user were tricked into opening a specially crafted website with Responsive Design Mode enabled, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. It was discovered that Thunderbird mishandled ftp URLs with encoded newline characters. If a user were tricked into clicking on a specially crafted link, an attacker could potentially exploit this to send arbitrary FTP commands. It was discovered that Thunderbird wrote signatures to disk and read them back during verification. A local attacker could potentially exploit this to replace the data with another signature file. It was discovered that Thunderbird might load an alternative OTR library. If a user were tricked into copying a specially crafted library to one of Thunderbird's search paths, an attacker could potentially exploit this to execute arbitrary code. It was discovered that secret keys imported into Thunderbird were stored unencrypted. A local attacker could potentially exploit this to obtain private keys. It was discovered that Thunderbird did not indicate when an inline signed or encrypted message contained additional unprotected parts. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, spoof, vulnerability
systems | linux, windows, ubuntu
advisories | CVE-2021-23961, CVE-2021-23982, CVE-2021-23984, CVE-2021-23987, CVE-2021-23994, CVE-2021-23995, CVE-2021-23999, CVE-2021-24002, CVE-2021-29948, CVE-2021-29949, CVE-2021-29956, CVE-2021-29957
MD5 | 604927ef5f1aa546db7b29136f6c883b
Ubuntu Security Notice USN-4995-1
Posted Jun 22, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4995-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, spoof the UI, bypass security restrictions, or execute arbitrary code. It was discovered that extensions could open popup windows with control of the window title in some circumstances. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to spoof a website and trick the user into providing credentials. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, windows, ubuntu
advisories | CVE-2021-23961, CVE-2021-23982, CVE-2021-23984, CVE-2021-23987, CVE-2021-23994, CVE-2021-23995, CVE-2021-23999, CVE-2021-24002, CVE-2021-29945, CVE-2021-29948, CVE-2021-29949, CVE-2021-29956, CVE-2021-29957
MD5 | 20dc83202964373baf16304f35c94c5a
Red Hat Security Advisory 2021-2264-01
Posted Jun 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2264-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-29956, CVE-2021-29957, CVE-2021-29967
MD5 | ef1492b960c68f40aabf76b03228dc92
Red Hat Security Advisory 2021-2263-01
Posted Jun 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2263-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-29956, CVE-2021-29957, CVE-2021-29967
MD5 | 38ec159abb9d5371e78b15a713c696c8
Red Hat Security Advisory 2021-2261-01
Posted Jun 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2261-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-29956, CVE-2021-29957, CVE-2021-29967
MD5 | ab08db1474a4090c066915139ba6b34f
Red Hat Security Advisory 2021-2262-01
Posted Jun 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-2262-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.11.0.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-29956, CVE-2021-29957, CVE-2021-29967
MD5 | 7e0881004bac73d66566106a3c50d496
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