Smashing Security podcast #295: Slushygate, sextortion, and nano-targeting

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What is slushygate and how does it link to sextortion in the States? What is the most impersonated brand when it comes to delivering phishing emails? And what the flip is nano-targeting?

All this and much more is discussed in the latest edition of the award-winning “Smashing Security” podcast by computer security veterans Graham Cluley and Carole Theriault, joined this week by fan favourite Maria Varmazis.

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USN-5703-1: Linux kernel (Intel IoTG) vulnerabilities

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Selim Enes Karaduman discovered that a race condition existed in the
General notification queue implementation of the Linux kernel, leading to a
use-after-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-1882)

Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan
and Ariel Sabba discovered that some Intel processors with Enhanced
Indirect Branch Restricted Speculation (eIBRS) did not properly handle RET
instructions after a VM exits. A local attacker could potentially use this
to expose sensitive information. (CVE-2022-26373)

Eric Biggers discovered that a use-after-free vulnerability existed in the
io_uring subsystem in the Linux kernel. A local attacker could possibly use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2022-3176)

It was discovered that the Netlink Transformation (XFRM) subsystem in the
Linux kernel contained a reference counting error. A local attacker could
use this to cause a denial of service (system crash). (CVE-2022-36879)

Jann Horn discovered that the KVM subsystem in the Linux kernel did not
properly handle TLB flush operations in some situations. A local attacker
in a guest VM could use this to cause a denial of service (guest crash) or
possibly execute arbitrary code in the guest kernel. (CVE-2022-39189)

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USN-5702-2: curl vulnerability

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USN-5702-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Robby Simpson discovered that curl incorrectly handled certain POST
operations after PUT operations. This issue could cause applications using
curl to send the wrong data, perform incorrect memory operations, or crash.
(CVE-2022-32221)

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USN-5696-2: MySQL vulnerabilities

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USN-5696-1 fixed several vulnerabilities in MySQL. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Multiple security issues were discovered in MySQL and this update includes
new upstream MySQL versions to fix these issues.

MySQL has been updated to 5.7.40 in Ubuntu 16.04 ESM.

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://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-40.html
https://www.oracle.com/security-alerts/cpuoct2022.html

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USN-5702-1: curl vulnerabilities

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Robby Simpson discovered that curl incorrectly handled certain POST
operations after PUT operations. This issue could cause applications using
curl to send the wrong data, perform incorrect memory operations, or crash.
(CVE-2022-32221)

Hiroki Kurosawa discovered that curl incorrectly handled parsing .netrc
files. If an attacker were able to provide a specially crafted .netrc file,
this issue could cause curl to crash, resulting in a denial of service.
This issue only affected Ubuntu 22.10. (CVE-2022-35260)

It was discovered that curl incorrectly handled certain HTTP proxy return
codes. A remote attacker could use this issue to cause curl to crash,
resulting in a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2022-42915)

Hiroki Kurosawa discovered that curl incorrectly handled HSTS support
when certain hostnames included IDN characters. A remote attacker could
possibly use this issue to cause curl to use unencrypted connections. This
issue only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2022-42916)

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Microsoft Event Log vulnerabilities threaten some Windows operating systems

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A pair of newly discovered vulnerabilities have highlighted the ongoing risks posed by Internet Explorer’s (IE) deep integration into the Windows ecosystem, despite Microsoft ending support for IE in June 2022.

Discovered by the Varonis Threat Labs team, the exploits affect an IE-specific Event Log that is present on all current Windows operating systems up to, but not including, Windows 11. The vulnerabilities, dubbed LogCrusher and OverLog by the researchers, have been reported to Microsoft, which released a partial patch on October 11, 2022. Teams are urged to patch systems and monitor suspicious activity to mitigate security risks which include event log crashing and remote denial-of-service (DoS) attacks.

To read this article in full, please click here

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