Daily Archives: February 19, 2024

Advisories

USN-6644-1: LibTIFF vulnerabilities

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It was discovered that LibTIFF incorrectly handled certain files. If
a user were tricked into opening a specially crafted file, an attacker
could possibly use this issue to cause the application to crash, resulting
in a denial of service. (CVE-2023-52356)

It was discovered that LibTIFF incorrectly handled certain image files
with the tiffcp utility. If a user were tricked into opening a specially
crafted image file, an attacker could possibly use this issue to cause
tiffcp to crash, resulting in a denial of service. (CVE-2023-6228)

It was discovered that LibTIFF incorrectly handled certain files. If
a user were tricked into opening a specially crafted file, an attacker
could possibly use this issue to cause the application to consume
resources, resulting in a denial of service. (CVE-2023-6277)

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Advisories

flatpak-runtime-f39-22 flatpak-sdk-f39-13

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FEDORA-FLATPAK-2024-cd3bcdb139

Packages in this update:

flatpak-runtime-f39-22
flatpak-sdk-f39-13

Update description:

Updated flatpak runtime and SDK, including latest Fedora 39 security and bug-fix errata.

In addition, this update also includes updated nss 3.98.0 that’s needed for upcoming firefox 123.0 update.

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News

EU Court of Human Rights Rejects Encryption Backdoors

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The European Court of Human Rights has ruled that breaking end-to-end encryption by adding backdoors violates human rights:

Seemingly most critically, the [Russian] government told the ECHR that any intrusion on private lives resulting from decrypting messages was “necessary” to combat terrorism in a democratic society. To back up this claim, the government pointed to a 2017 terrorist attack that was “coordinated from abroad through secret chats via Telegram.” The government claimed that a second terrorist attack that year was prevented after the government discovered it was being coordinated through Telegram chats.

However, privacy advocates backed up Telegram’s claims that the messaging services couldn’t technically build a backdoor for governments without impacting all its users. They also argued that the threat of mass surveillance could be enough to infringe on human rights. The European Information Society Institute (EISI) and Privacy International told the ECHR that even if governments never used required disclosures to mass surveil citizens, it could have a chilling effect on users’ speech or prompt service providers to issue radical software updates weakening encryption for all users.

In the end, the ECHR concluded that the Telegram user’s rights had been violated, partly due to privacy advocates and international reports that corroborated Telegram’s position that complying with the FSB’s disclosure order would force changes impacting all its users.

The “confidentiality of communications is an essential element of the right to respect for private life and correspondence,” the ECHR’s ruling said. Thus, requiring messages to be decrypted by law enforcement “cannot be regarded as necessary in a democratic society.”

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Advisories

USN-6642-1: Bind vulnerabilities

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Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered
that Bind incorrectly handled parsing large DNS messages. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2023-4408)

Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered
that Bind icorrectly handled validating DNSSEC messages. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2023-50387)

It was discovered that Bind incorrectly handled preparing an NSEC3 closest
encloser proof. A remote attacker could possibly use this issue to cause
Bind to consume resources, leading to a denial of service. (CVE-2023-50868)

It was discovered that Bind incorrectly handled reverse zone queries when
nxdomain-redirect is enabled. A remote attacker could possibly use this
issue to cause Bind to crash, leading to a denial of service.
(CVE-2023-5517)

It was discovered that Bind incorrectly handled certain specific recursive
query patterns. A remote attacker could possibly use this issue to cause
Bind to consume memory, leading to a denial of service. (CVE-2023-6516)

Bind has been updated to 9.6.48. In addition to security fixes, the updated
packages contain bug fixes, new features, and possibly incompatible
changes.

Please see the following for more information:
https://downloads.isc.org/isc/bind9/9.16.48/doc/arm/html/notes.html

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