Security
Headlines
HeadlinesLatestCVEs

Headline

Ubuntu Security Notice USN-6278-2

Ubuntu Security Notice 6278-2 - USN-6278-1 fixed several vulnerabilities in .NET. This update provides the corresponding updates for Ubuntu 22.04 LTS. It was discovered that .NET did properly handle the execution of certain commands. An attacker could possibly use this issue to achieve remote code execution.

Packet Storm
#vulnerability#ubuntu#dos#rce#perl

==========================================================================
Ubuntu Security Notice USN-6278-2
August 10, 2023

dotnet6, dotnet7 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in .NET.

Software Description:

  • dotnet6: dotNET CLI tools and runtime
  • dotnet7: dotNET CLI tools and runtime

Details:

USN-6278-1 fixed several vulnerabilities in .NET. This update
provides the corresponding updates for Ubuntu 22.04 LTS.

Original advisory details:

It was discovered that .NET did properly handle the execution of
certain commands. An attacker could possibly use this issue to
achieve remote code execution. (CVE-2023-35390)

Benoit Foucher discovered that .NET did not properly implement the
QUIC stream limit in HTTP/3. An attacker could possibly use this
issue to cause a denial of service. (CVE-2023-38178)

It was discovered that .NET did not properly handle the disconnection
of potentially malicious clients interfacing with a Kestrel server. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2023-38180)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
aspnetcore-runtime-6.0 6.0.121-0ubuntu1~22.04.1
aspnetcore-runtime-7.0 7.0.110-0ubuntu1~22.04.1
dotnet-host 6.0.121-0ubuntu1~22.04.1
dotnet-host-7.0 7.0.110-0ubuntu1~22.04.1
dotnet-hostfxr-6.0 6.0.121-0ubuntu1~22.04.1
dotnet-hostfxr-7.0 7.0.110-0ubuntu1~22.04.1
dotnet-runtime-6.0 6.0.121-0ubuntu1~22.04.1
dotnet-runtime-7.0 7.0.110-0ubuntu1~22.04.1
dotnet-sdk-6.0 6.0.121-0ubuntu1~22.04.1
dotnet-sdk-7.0 7.0.110-0ubuntu1~22.04.1
dotnet6 6.0.121-0ubuntu1~22.04.1
dotnet7 7.0.110-0ubuntu1~22.04.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6278-2
https://ubuntu.com/security/notices/USN-6278-1
CVE-2023-35390, CVE-2023-38178, CVE-2023-38180

Package Information:
https://launchpad.net/ubuntu/+source/dotnet6/6.0.121-0ubuntu1~22.04.1
https://launchpad.net/ubuntu/+source/dotnet7/7.0.110-0ubuntu1~22.04.1

Related news

Google Fixes Serious Security Flaws in Chrome and Android

Plus: Mozilla patches more than a dozen vulnerabilities in Firefox, and enterprise companies Ivanti, Cisco, and SAP roll out a slew of updates to get rid of some high-severity bugs.

Red Hat Security Advisory 2023-4640-01

Red Hat Security Advisory 2023-4640-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4645-01

Red Hat Security Advisory 2023-4645-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 6.0.121 and .NET Runtime 6.0.21. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4643-01

Red Hat Security Advisory 2023-4643-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 7.0.110 and .NET Runtime 7.0.10. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4639-01

Red Hat Security Advisory 2023-4639-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4642-01

Red Hat Security Advisory 2023-4642-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 7.0.110 and .NET Runtime 7.0.10. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4644-01

Red Hat Security Advisory 2023-4644-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 6.0.121 and .NET Runtime 6.0.21. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-4641-01

Red Hat Security Advisory 2023-4641-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 6.0.121 and .NET Runtime 6.0.21. Issues addressed include a denial of service vulnerability.

RHSA-2023:4641: Red Hat Security Advisory: rh-dotnet60-dotnet security, bug fix, and enhancement update

An update for rh-dotnet60-dotnet is now available for .NET Core on Red Hat Enterprise Linux. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-35390: A vulnerability was found in dotnet. This issue exists when some dotnet commands are used in directories with weaker permissions, which can result in remote code execution. * CVE-2023-38180: An uncontrolled resource consumption vulnerability was found in the Kestrel component of the dotNET. When detecting a potentially mali...

RHSA-2023:4640: Red Hat Security Advisory: .NET 6.0 security update

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-35390: A vulnerability was found in dotnet. This issue exists when some dotnet commands are used in directories with weaker permissions, which can result in remote code execution. * CVE-2023-38180: An uncontrolled resource consumption vulnerability was found in the Kestrel component of the dotNET. When detecting a potentially...

RHSA-2023:4639: Red Hat Security Advisory: .NET 6.0 security update

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-35390: A vulnerability was found in dotnet. This issue exists when some dotnet commands are used in directories with weaker permissions, which can result in remote code execution. * CVE-2023-38180: An uncontrolled resource consumption vulnerability was found in the Kestrel component of the dotNET. When detecting a potentially...

CISA Adds Microsoft .NET Vulnerability to KEV Catalog Due to Active Exploitation

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a recently patched security flaw in Microsoft's .NET and Visual Studio products to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Tracked as CVE-2023-38180 (CVSS score: 7.5), the high-severity flaw relates to a case denial-of-service (DoS) impacting .NET and Visual Studio. It

August Patch Tuesday stops actively exploited attack chain and more

Categories: Exploits and vulnerabilities Categories: News Microsoft has announced patches for 87 vulnerabilities this month, including two that are being actively exploited. (Read more...) The post August Patch Tuesday stops actively exploited attack chain and more appeared first on Malwarebytes Labs.

Ubuntu Security Notice USN-6278-1

Ubuntu Security Notice 6278-1 - It was discovered that .NET did not properly handle the execution of certain commands. An attacker could possibly use this issue to achieve remote code execution. Benoit Foucher discovered that .NET did not properly implement the QUIC stream limit in HTTP/3. An attacker could possibly use this issue to cause a denial of service. It was discovered that .NET did not properly handle the disconnection of potentially malicious clients interfacing with a Kestrel server. An attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice USN-6278-1

Ubuntu Security Notice 6278-1 - It was discovered that .NET did not properly handle the execution of certain commands. An attacker could possibly use this issue to achieve remote code execution. Benoit Foucher discovered that .NET did not properly implement the QUIC stream limit in HTTP/3. An attacker could possibly use this issue to cause a denial of service. It was discovered that .NET did not properly handle the disconnection of potentially malicious clients interfacing with a Kestrel server. An attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice USN-6278-1

Ubuntu Security Notice 6278-1 - It was discovered that .NET did not properly handle the execution of certain commands. An attacker could possibly use this issue to achieve remote code execution. Benoit Foucher discovered that .NET did not properly implement the QUIC stream limit in HTTP/3. An attacker could possibly use this issue to cause a denial of service. It was discovered that .NET did not properly handle the disconnection of potentially malicious clients interfacing with a Kestrel server. An attacker could possibly use this issue to cause a denial of service.

GHSA-p8rx-fwgq-rh2f: .NET Remote Code Execution Vulnerability

# Microsoft Security Advisory CVE-2023-35390: .NET Remote Code Execution Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0 and .NET 6.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists when some dotnet commands are used in directories with weaker permissions which can result in remote code execution. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/266 ### <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 7.0.1xx SDK 7.0.109 or earlier. * Any .NET 7.0.3xx SDK 7.0.306 or earlier. * Any .NET 6.0.1xx SDK 6.0.120 or earlier. * Any .NET 6.0.3xx SDK 6.0.315 or earlier. * A...

GHSA-p57v-gv7q-4xfm: .NET Denial of Service Vulnerability

# Microsoft Security Advisory CVE-2023-38178: .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET Kestrel where a malicious client can bypass QUIC stream limit in HTTP/3 in both ASP.NET and .NET runtimes resulting in denial of service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/268 ### <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 7.0 application running on .NET 7.0.9 or earlier. If your application uses the following package versions, ensure you update to the latest version of ....

GHSA-vmch-3w2x-vhgq: .NET Denial of Service Vulnerability

# Microsoft Security Advisory CVE-2023-38180: .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core 2.1, .NET 6.0, and .NET 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in Kestrel where, on detecting a potentially malicious client, Kestrel will sometimes fail to disconnect it, resulting in denial of service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/269 ### <a name="mitigation-factors"></a>Mitigation factors If your application is running behind a reverse proxy, or Web Application Firewall, which has its own mitigations against HTTP based attacks this issue may be mitigated by the proxy or WAF ## <a name="affected-software"></a>Affected software * Any .NET 7.0 applicat...

Microsoft Releases Patches for 74 New Vulnerabilities in August Update

Microsoft has patched a total of 74 flaws in its software as part of the company's Patch Tuesday updates for August 2023, down from the voluminous 132 vulnerabilities the company fixed last month. This comprises six Critical and 67 Important security vulnerabilities. Also released by the tech giant are two defense-in-depth updates for Microsoft Office (ADV230003) and the Memory Integrity System

Microsoft Patch Tuesday, August 2023 Edition

Microsoft Corp. today issued software updates to plug more than 70 security holes in its Windows operating systems and related products, including a patch that addresses multiple zero-day vulnerabilities currently being exploited in the wild.

Six critical vulnerabilities included in August’s Microsoft security update

The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.

CVE-2023-38180

.NET and Visual Studio Denial of Service Vulnerability

CVE-2023-38178

.NET Core and Visual Studio Denial of Service Vulnerability

CVE-2023-35390

.NET and Visual Studio Remote Code Execution Vulnerability

Packet Storm: Latest News

Zeek 6.0.9