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July Linux Patch Wednesday

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July Linux Patch Wednesday

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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I’ve released a new version of Vulristics 1.0.6

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I've released a new version of Vulristics 1.0.6

I’ve released a new version of Vulristics 1.0.6.

🔹 I’ve made it easier to work with exploit data. Now all Data Sources bring such data in a single format and it is processed uniformly. Including signs of the presence of an exploit in Microsoft CVSS Temporal Vector (I classify them as private exploits). First, I look for the presence of public exploits; if there are none, then private exploits.

🔹 I fixed a bug due to which it was not possible to force the vulnerability type to be set from the Custom Data Source.

🔹 During simplified detection of product names for generated Microsoft vulnerability descriptions, product descriptions can now be pulled up by alternative_names as well.

🔹I fixed a bug with Vulristics crashing when generating a Microsoft Patch Tuesday report while searching for an MSPT review from Qualys. […]

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July Microsoft Patch Tuesday

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July Microsoft Patch Tuesday

July Microsoft Patch Tuesday. There are 175 vulnerabilities in total, 33 of which appeared between June and July Patch Tuesday.

There are 2 vulnerabilities with the sign of exploitation in the wild:

🔻 Spoofing – Windows MSHTML Platform (CVE-2024-38112). It’s not clear what exactly is being spoofed. Let’s wait for the details. It is currently known that to exploit the vulnerability, an attacker must send the victim a malicious (MSHTML?) file, which the victim must somehow run/open.
🔻 Elevation of Privilege – Windows Hyper-V (CVE-2024-38080). This vulnerability allows an authenticated attacker to execute code with SYSTEM privileges. Again, no details. This could be interpreted that the guest OS user can gain privileges in the host OS (I hope this is not the case).

From the rest we can highlight:

🔸 Elevation of Privilege – various Windows components (CVE-2024-38059, CVE-2024-38066, CVE-2024-38100, CVE-2024-38034, CVE-2024-38079, CVE-2024-38085, CVE-2024-38062, CVE-2024-30079, CVE-2024-38050). EoPs quite often become exploitable.
🔸 Remote Code Execution – Windows Remote Desktop Licensing Service (CVE-2024-38074, CVE-2024-38076, CVE-2024-38077)
🔸 Remote Code Execution – Microsoft Office (CVE-2024-38021)
🔸 Remote Code Execution – Windows Imaging Component (CVE-2024-38060). All you need to do is upload a malicious TIFF file to the server.
🔸 Remote Code Execution – Microsoft SharePoint Server (CVE-2024-38023, CVE-2024-38024). Authentication is required, but “Site Owner” permissions are sufficient.

🗒 Vulristics report on July Microsoft Patch Tuesday

Vulristics shows an exploit existence for Spoofing – RADIUS Protocol (CVE-2024-3596) on GitHub, but in reality it is just a detection utility.

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Linux Patch Wednesday: here is this May peak!

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Linux Patch Wednesday: here is this May peak!

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)

June Microsoft Patch Tuesday

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June Microsoft Patch Tuesday

June Microsoft Patch Tuesday. There are 69 vulnerabilities in total, 18 of which were added between May and June Patch Tuesday. Among these added were 2 vulnerabilities with signs of exploitation in the wild:

🔻 Remote Code Execution – Chromium (CVE-2024-5274, CVE-2024-4947). Both vulnerabilities are in CISA KEV; there are no exploits for them yet.

For the remaining vulnerabilities, there are no formal signs of exploitation in the wild or public exploits yet.

The specialized InfoSec media pay attention to these 2:

🔸 Remote Code Execution – Microsoft Message Queuing (MSMQ) (CVE-2024-30080). This vulnerability has a high CVSS Score of 9.8. To get RCE, the attacker sends a specially crafted malicious packet to the MSMQ server. The vulnerability may well become wormable for Windows servers with MSMQ enabled. It is very similar to last year’s QueueJumper (CVE-2023-21554).
🔸 Denial of Service – DNSSEC (CVE-2023-50868). Vulnerability in DNSSEC validation. An attacker can cause DoS using standard DNS integrity protocols. 🤷‍♂️ I don’t see any super criticality, but this is rare for MS Patch Tuesday, which is probably why everyone is writing about it.

What else you can pay attention to:

🔸 Elevation of Privilege – Windows Win32k (CVE-2024-30091), Windows Kernel (CVE-2024-30088, CVE-2024-30099) and Windows Cloud Files Mini Filter Driver (CVE-2024-30085). Why these? Microsoft’s CVSS states that there are private Proof-of-Concept exploits for them.
🔸 Remote Code Execution – Microsoft Office (CVE-2024-30101). This is a Microsoft Outlook vulnerability. To successfully exploit this vulnerability, a user must open a malicious email in an affected version of Microsoft Outlook and then perform certain actions to trigger the vulnerability. It’s enough to open the email in the Preview Pane. However, to successfully exploit this vulnerability, an attacker needs to win the race condition.
🔸 Remote Code Execution – Microsoft Outlook (CVE-2024-30103). Preview Pane is a vector. Authentication required. The vulnerability is somehow related to the creation of malicious DLL files. 🤷‍♂️
🔸 Remote Code Execution – Windows Wi-Fi Driver (CVE-2024-30078). An attacker can execute code on a vulnerable system by sending a specially crafted network packet. The victim must be within the attacker’s Wi-Fi range and use a Wi-Fi adapter. Sounds interesting, let’s wait for details. 😈
🔸 Remote Code Execution – Microsoft Office (CVE-2024-30104). An attacker must send the user a malicious file and convince the user to open the file. The Preview Pane is NOT an attack vector.

🗒 Vulristics report on June Microsoft Patch Tuesday

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May Linux Patch Wednesday

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May Linux Patch Wednesday
May Linux Patch WednesdayMay Linux Patch WednesdayMay Linux Patch WednesdayMay Linux Patch WednesdayMay Linux Patch Wednesday

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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May Microsoft Patch Tuesday

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May Microsoft Patch TuesdayMay Microsoft Patch TuesdayMay Microsoft Patch TuesdayMay Microsoft Patch TuesdayMay Microsoft Patch TuesdayMay Microsoft Patch TuesdayMay Microsoft Patch Tuesday

May Microsoft Patch Tuesday. There are 91 vulnerabilities in total. Of those, 29 were added between April and May Patch Tuesday.

Two vulnerabilities have signs of exploitation in the wild and the presence of a functional exploit (not yet public):

🔻 Security Feature Bypass – Windows MSHTML Platform (CVE-2024-30040). In fact, an attacker can execute arbitrary code when the victim opens a specially crafted document. It is exploited through phishing.
🔻 Elevation of Privilege – Windows DWM Core Library (CVE-2024-30051). A local attacker can gain SYSTEM privileges on the vulnerable host. Microsoft credits four different groups for reporting the bug, indicating that the vulnerability is being widely exploited. The vulnerability is associated with the QakBot malware.

Among the rest we can note:

🔸 Security Feature Bypass – Windows Mark of the Web (CVE-2024-30050). Such vulnerabilities have been frequently exploited recently. Microsoft indicates that there is a functional exploit (private) for the vulnerability.
🔸 Remote Code Execution – Microsoft SharePoint Server (CVE-2024-30044). An authenticated attacker with Site Owner privileges or higher can execute arbitrary code in the context of SharePoint Server by uploading a specially crafted file.
🔸 Elevation of Privilege – Windows Search Service (CVE-2024-30033). ZDI believes that the vulnerability has the potential to be exploited in the wild.
🔸 Remote Code Execution – Microsoft Excel (CVE-2024-30042). An attacker can execute code, presumably in the user’s context, when a malicious file is opened.

🗒 Vulristics report

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