Tag Archives: LinuxPatchWednesday

October Linux Patch Wednesday

October Linux Patch Wednesday. There are 248 vulnerabilities in total. Of these, 92 are in the Linux Kernel.

5 vulnerabilities with signs of exploitation in the wild:

🔻 Remote Code Execution – CUPS (CVE-2024-47176) and 4 more CUPS vulnerabilities that can also be used to enhance DoS attacks
🔻 Remote Code Execution – Mozilla Firefox (CVE-2024-9680)

For 10 vulnerabilities there are no signs of exploitation in the wild yet, but exploits exist. Among them, the following can be highlighted:

🔸 Remote Code Execution – Cacti (CVE-2024-43363)
🔸 Elevation of Privilege – Linux Kernel (CVE-2024-46848)
🔸 Arbitrary File Reading – Jenkins (CVE-2024-43044)
🔸 Denial of Service – CUPS (CVE-2024-47850)
🔸 Cross Site Scripting – Rollup JavaScript module (CVE-2024-47068)

🗒 Vulristics October Linux Patch Wednesday Report

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September Linux Patch Wednesday

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September Linux Patch Wednesday. 460 vulnerabilities. Of these, 279 are in the Linux Kernel.

2 vulnerabilities with signs of exploitation in the wild, but without public exploits:

🔻 Security Feature Bypass – Chromium (CVE-2024-7965)
🔻 Memory Corruption – Chromium (CVE-2024-7971)

29 vulnerabilities with no sign of exploitation in the wild, but with a link to a public exploit or a sign of its existence. Can be highlighted:

🔸 Remote Code Execution – pgAdmin (CVE-2024-2044), SPIP (CVE-2024-7954), InVesalius (CVE-2024-42845)
🔸 Command Injection – SPIP (CVE-2024-8517)

Among them are vulnerabilities from 2023, fixed in repos only now (in RedOS):

🔸 Remote Code Execution – webmin (CVE-2023-38303)
🔸 Code Injection – webmin (CVE-2023-38306, CVE-2023-38308)
🔸 Information Disclosure – KeePass (CVE-2023-24055)

Debian brought “Google Chrome on Windows” vulnerabilities. 😣👎

🗒 Vulristics September Linux Patch Wednesday Report

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August Linux Patch Wednesday

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August Linux Patch Wednesday. 658 vulnerabilities. Of these, 380 are in the Linux Kernel. About 10 have signs of exploitation in the wild. I will highlight:

🔻 Vulnerabilities of IT Asset Management system GLPI: AuthBypass (CVE-2023-35939, CVE-2023-35940) and Code Injection (CVE-2023-35924, CVE-2023-36808, CVE-2024-27096, CVE-2024-29889). Fixed in RedOS.
🔻 InfDisclosure – Minio (CVE-2023-28432). Old and trendy, but also fixes appeared only in RedOS.
🔻 DoS – PHP (CVE-2024-2757). If I were to take into account Fedora or Alpine bulletins, this would be in an earlier LPW. 🤔 2DO.

About 30 without signs of exploitation in the wild, but with exploits. I will highlight:

🔸 Command Injection – Apache HTTP Server (CVE-2024-40898)
🔸 AuthBypass – Apache HTTP Server (CVE-2024-40725)
🔸 AuthBypass – Neat VNC (CVE-2024-42458)
🔸 RCE – Calibre (CVE-2024-6782); yes, e-books software 🙂

🗒 Vulristics report on August Linux Patch Wednesday

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July Linux Patch Wednesday

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July Linux Patch Wednesday. There are 705 vulnerabilities, of which 498 are in the Linux Kernel. There are no vulnerabilities with signs of exploitation in the wild yet, 11 have public exploits.

🔻 RCE – OpenSSH “regreSSHion” (CVE-2024-6387) is in the absolute top with many variations of exploits on GitHub. Mind the malicious fakes (❗️). I will also mention a similar vulnerability RCE – OpenSSH (CVE-2024-6409) with no exploits yet.
🔻 Public PoC links for DoS in Suricata (CVE-2024-38536) and QEMU (CVE-2024-3567).

According to BDU, public exploits exist for:

🔸 AuthBypass – RADIUS Protocol (CVE-2024-3596), it was also fixed in the July MSPT
🔸 Security Feature Bypass – Exim (CVE-2024-39929) – mime_filename blocking bypass, as well as in Nextcloud (CVE-2024-22403) – eternal OAuth codes
🔸 DoS – OpenTelemetry (CVE-2023-45142)
🔸 Memory Corruption – 7-Zip (CVE-2023-52168)

🗒 Vulristics report on July Linux Patch Wednesday

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Linux Patch Wednesday: here is this May peak!

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Linux Patch Wednesday: here is this May peak! 🤦‍♂️ Also about June Linux Patch Wednesday. If you remember, in my post about the May Linux Patch Wednesday I was happy that, despite the launch of the rule for Unknown dates, the peak in May was insignificant. Although “32406 oval definitions without a date received a nominal date of 2024-05-15”. It turned out that the peak was not visible due to an error in the code. Ba-dum-tss! 🥸🤷‍♂️

I noticed that not all CVEs are in LPW bulletins, despite the addition of nominal dates, for example the high-profile vulnerability Elevation of Privilege (Local Privilege Escalation) – Linux Kernel (CVE-2024-1086). I could not find it anywhere. I debugged the function that distributes vulnerabilities into bulletins and added tests. I have ensured that all 38362 CVEs from the Linux OVAL content are actually distributed in bulletins. Including CVE-2024-1086. Here it is in February:

$ grep "CVE-2024-1086"  bulletins/*
bulletins/2024-02-21.json:        "CVE-2024-1086": [
bulletins/2024-02-21.json:                "title": "CVE-2024-1086 linux",
bulletins/2024-02-21.json:                "title": "CVE-2024-1086 linux",
bulletins/2024-02-21.json:                "title": "CVE-2024-1086 linux",

Well, there really is a peak in May. And how huge it is! 11476 CVEs! 😱 This is so much that I regenerated the Vulristics report for it only using 2 sources: Vulners and BDU. Since even from Vulners the data was not collected quickly enough. The report contains 77 vulnerabilities with signs of active exploitation in the wild and 1404 vulnerabilities with exploits, but without signs of active exploitation in the wild. Since for the most part these are old vulnerabilities for which it was simply not clear exactly when they were fixed, for example, Remote Code Execution – Apache HTTP Server (CVE-2021-42013), I will not analyze them in detail – for those interested, see the report. But please note that the report size is very large.

🗒 Vulristics report on the May Linux Patch Wednesday (31.3 MB)

As for the June Linux Patch Wednesday, which was finalized on June 19, there are 1040 vulnerabilities. Also quite a lot. Why is this so? On the one hand, the rule for Unknown dates added 977 Debian OVAL definitions without a date. Not 30k, like in May, but also significant. Out of 1040 vulnerabilities, 854 are Linux Kernel vulnerabilities. Moreover, there are quite a lot of “old” vulnerability identifiers, but created in 2024. For example, CVE-2021-47489 with NVD Published Date 05/22/2024. 🤔 CNA Linux Kernel is doing something strange.

🔻 With signs of exploitation in the wild again Remote Code Execution – Chromium (CVE-2024-5274, CVE-2024-4947), like in Microsoft Patch Tuesday. According to the BDU, Remote Code Execution – Libarchive (CVE-2024-26256) is also exploited in the wild.

🔸 Another 20 vulnerabilities with a public exploit. I can highlight separately Remote Code Execution – Cacti (CVE-2024-25641) and Remote Code Execution – onnx/onnx framework (CVE-2024-5187).

🗒 Vulristics report on the June Linux Patch Wednesday (4.4 MB)

May Linux Patch Wednesday

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May Linux Patch Wednesday. Last month, we jointly decided that it was worth introducing a rule for Unknown dates starting from May 2024. Which, in fact, is what I implemented. Now, if I see an oval definition that does not have a publication date (date when patches for related vulnerabilities were available), then I nominally assign today’s date. Thus, 32406 oval definitions without a date received a nominal date of 2024-05-15. One would expect that we would get a huge peak for vulnerabilities that “started being patched in May” based on the nominal date. How did it really turn out?

In fact, the peak was not very large. There are 424 CVEs in the May Linux Patch Wednesday. While in April there were 348. It’s comparable. Apparently the not very large peak is due to the fact that most of the vulnerabilities had patch dates older than the nominal one set (2024-05-15). And this is good. 🙂 It should get even better in June.

As usual, I generated a Vulristics report for the May vulnerabilities. Most of the vulnerabilities (282) relate to the Linux Kernel. This is due to the fact that Linux Kernel is now a CNA and they can issue CVEs for all sorts of things like bugs with huge traces right in the vulnerability descriptions.

The vulnerability from CISA KEV comes first.

🔻Path Traversal – Openfire (CVE-2023-32315). This is the August 2023 trending vulnerability. It was included in the report due to a fix in RedOS 2024-05-03. Has it not been fixed in other Linux distributions? It looks like this. In Vulners, among the related security objects, we can only see the RedOS bulletin. Apparently there are no Openfire packages in the repositories of other Linux distributions.

In second place is a vulnerability with a sign of active exploitation according to AttackerKB.

🔻 Path Traversal – aiohttp (CVE-2024-23334). The bug allows unauthenticated attackers to access files on vulnerable servers.

According to data from the FSTEC BDU, another 16 vulnerabilities have signs of active exploitation in the wild.

🔻 Memory Corruption – nghttp2 (CVE-2024-27983)
🔻 Memory Corruption – Chromium (CVE-2024-3832, CVE-2024-3833, CVE-2024-3834, CVE-2024-4671)
🔻 Memory Corruption – FreeRDP (CVE-2024-32041, CVE-2024-32458, CVE-2024-32459, CVE-2024-32460)
🔻 Memory Corruption – Mozilla Firefox (CVE-2024-3855, CVE-2024-3856)
🔻 Security Feature Bypass – bluetooth_core_specification (CVE-2023-24023)
🔻 Security Feature Bypass – Chromium (CVE-2024-3838)
🔻 Denial of Service – HTTP/2 (CVE-2023-45288)
🔻 Denial of Service – nghttp2 (CVE-2024-28182)
🔻 Incorrect Calculation – FreeRDP (CVE-2024-32040)

Another 22 vulnerabilities have an exploit (public or private), but so far there are no signs of active exploitation in the wild. I won’t list them all here, but you can pay attention to:

🔸 Security Feature Bypass – putty (CVE-2024-31497). A high-profile vulnerability that allows an attacker to recover a user’s private key.
🔸 Remote Code Execution – GNU C Library (CVE-2014-9984)
🔸 Remote Code Execution – Flatpak (CVE-2024-32462)
🔸 Command Injection – aiohttp (CVE-2024-23829)
🔸 Security Feature Bypass – FreeIPA (CVE-2024-1481)

I think that to improve the Vulristics report, it makes sense to separately group vulnerabilities with public exploits and private exploits, since this still greatly affects the criticality. Put 🐳 if you would like to see this feature.

🗒 Vulristics report on the May Linux Patch Wednesday

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I generated a Vulristics report on the April Linux Patch Wednesday

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I generated a Vulristics report on the April Linux Patch Wednesday. Over the past month, Linux vendors have begun releasing patches for a record number of vulnerabilities – 348. There are signs of exploitation in the wild for 7 vulnerabilities (data on incidents from the FSTEC BDU). Another 165 have a link to an exploit or a sign of the existence of a public/private exploit.

Let’s start with 7 vulnerabilities with signs of exploitation in the wild and exploits:

🔻 The trending January vulnerability Authentication Bypass – Jenkins (CVE-2024-23897) unexpectedly appeared in the TOP. As far as I understand, Linux distributions usually do not include Jenkins packages in the official repositories and, accordingly, do not add Jenkins vulnerability detection rules to their OVAL content. Unlike the Russian Linux distribution RedOS. Therefore, RedOS has the earliest fix timestamp for this vulnerability.

🔻 2 RCE vulnerabilities. The most interesting of them is Remote Code Execution – Exim (CVE-2023-42118). When generating the report, I deliberately did not take into account the vulnerability description and product names from the BDU database (flags –bdu-use-product-names-flag, –bdu-use-vulnerability-descriptions-flag set to False). Otherwise, the report would be partly in English and partly in Russian. But it turned out that so far only BDU has an adequate description of this vulnerability. 🤷‍♂️ You need to take a closer look at this vulnerability because Exim is a fairly popular mail server. The second RCE vulnerability is in the web browser, Remote Code Execution – Safari (CVE-2023-42950).

🔻2 DoS vulnerabilities. Denial of Service – nghttp2/Apache HTTP Server (CVE-2024-27316) and Denial of Service – Apache Traffic Server (CVE-2024-31309). The second is classified in the report as Security Feature Bypass, but this is due to incorrect CWE in NVD (CWE-20 – Improper Input Validation)

🔻 2 browser vulnerabilities Security Feature Bypass – Chromium (CVE-2024-2628, CVE-2024-2630)

Among the vulnerabilities for which there are only signs of the existence of exploits so far, you can pay attention to the following:

🔸 A large number of RCE vulnerabilities (71). Most of them are in the gtkwave product. This is a viewer for VCD (Value Change Dump) files, which are typically created by digital circuit simulators. Also, the Remote Code Execution – Cacti (CVE-2023-49084, CVE-2023-49085) vulnerabilities look dangerous. Cacti is a solution for monitoring servers and network devices.

🔸 Security Feature Bypass – Sendmail (CVE-2023-51765). Allows an attacker to inject email messages with a spoofed MAIL FROM address.

🔸 A pack of Cross Site Scripting vulnerabilities in MediaWiki, Cacti, Grafana, Nextcloud.

There is a lot to explore this time. 🤩

🗒 April Linux Patch Wednesday

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Alexander V. Leonov

Vulnerability Management and more

Tag Archives: LinuxPatchWednesday

October Linux Patch Wednesday

September Linux Patch Wednesday

August Linux Patch Wednesday

July Linux Patch Wednesday

Linux Patch Wednesday: here is this May peak!

May Linux Patch Wednesday

I generated a Vulristics report on the April Linux Patch Wednesday