According to the versions of the git packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In Git before 2.13.7, 2.14.x before 2.14.4, 2.15.x     before 2.15.2, 2.16.x before 2.16.4, and 2.17.x before     2.17.1, remote code execution can occur. With a crafted     .gitmodules file, a malicious project can execute an     arbitrary script on a machine that runs 'git clone
    --recurse-submodules' because submodule 'names' are     obtained from this file, and then appended to     $GIT_DIR/modules, leading to directory traversal with     '../' in a name. Finally, post-checkout hooks from a     submodule are executed, bypassing the intended design     in which hooks are not obtained from a remote     server.(CVE-2018-11235)

  - A shell command injection flaw related to the handling     of 'ssh' URLs has been discovered in Git. An attacker     could use this flaw to execute shell commands with the     privileges of the user running the Git client, for     example, when performing a 'clone' action on a     malicious repository or a legitimate repository     containing a malicious commit.(CVE-2017-1000117)

  - Git before 2.10.5, 2.11.x before 2.11.4, 2.12.x before     2.12.5, 2.13.x before 2.13.6, and 2.14.x before 2.14.2     uses unsafe Perl scripts to support subcommands such as     cvsserver, which allows attackers to execute arbitrary     OS commands via shell metacharacters in a module name.
    The vulnerable code is reachable via git-shell even     without CVS support.(CVE-2017-14867)

  - It was found that the git-prompt.sh script shipped with     git failed to correctly handle branch names containing     special characters. A specially crafted git repository     could use this flaw to execute arbitrary commands if a     user working with the repository configured their shell     to include repository information in the     prompt.(CVE-2014-9938)

  - An integer truncation flaw and an integer overflow     flaw, both leading to a heap-based buffer overflow,     were found in the way Git processed certain path     information. A remote attacker could create a specially     crafted Git repository that would cause a Git client or     server to crash or, possibly, execute arbitrary     code.(CVE-2016-2324)

  - A flaw was found in the way the git-remote-ext helper     processed certain URLs. If a user had Git configured to     automatically clone submodules from untrusted     repositories, an attacker could inject commands into     the URL of a submodule, allowing them to execute     arbitrary code on the user's system.(CVE-2015-7545)

  - Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before     2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and     2.19.x before 2.19.1 allows remote code execution     during processing of a recursive 'git clone' of a     superproject if a .gitmodules file has a URL field     beginning with a '-' character.(CVE-2018-17456)

  - An integer truncation flaw and an integer overflow     flaw, both leading to a heap-based buffer overflow,     were found in the way Git processed certain path     information. A remote attacker could create a specially     crafted Git repository that would cause a Git client or     server to crash or, possibly, execute arbitrary     code.(CVE-2016-2315)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated git packages that fix one security issue are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Git is a distributed revision control system with a decentralized architecture. As opposed to centralized version control systems with a client-server model, Git ensures that each working copy of a Git repository is an exact copy with complete revision history. This not only allows the user to work on and contribute to projects without the need to have permission to push the changes to their official repositories, but also makes it possible for the user to work with no network connection.

A flaw was found in the way the git-remote-ext helper processed certain URLs. If a user had Git configured to automatically clone submodules from untrusted repositories, an attacker could inject commands into the URL of a submodule, allowing them to execute arbitrary code on the user's system. (BZ#1269794)

All git users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.

Blake Burkhart discovered that the Git git-remote-ext helper incorrectly handled recursive clones of git repositories. A remote attacker could possibly use this issue to execute arbitrary code by injecting commands via crafted URLs.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201605-01 (Git: Multiple vulnerabilities)

    Git is vulnerable to the remote execution of arbitrary code by cloning       repositories with large filenames or a large number of nested trees.
      Additionally, some protocols within Git, such as git-remote-ext, can       execute arbitrary code found within URLs. These URLs that submodules use       may come from arbitrary sources (e.g., .gitmodules files in a remote       repository), and can effect those who enable recursive fetch. Restrict       the allowed protocols to well known and safe ones.
  Impact :

    Remote attackers could execute arbitrary code on both client and server.
  Workaround :

    There is no known workaround at this time.

A flaw was found in the way the git-remote-ext helper processed certain URLs. If a user had Git configured to automatically clone submodules from untrusted repositories, an attacker could inject commands into the URL of a submodule, allowing them to execute arbitrary code on the user's system.

The git package was updated to fix the following security issue :

  - CVE-2015-7545: Fix remote code execution with recursive     fetch of submodules (bsc#948969).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Blake Burkhart discovered that the Git git-remote-ext helper incorrectly handled recursive clones of git repositories. A remote attacker could possibly use this issue to execute arbitary code by injecting commands via crafted URLs.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2015-2515 advisory.

  - The (1) git-remote-ext and (2) unspecified other remote helper programs in Git before 2.3.10, 2.4.x before     2.4.10, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 do not properly restrict the allowed protocols, which     might allow remote attackers to execute arbitrary code via a URL in a (a) .gitmodules file or (b) unknown     other sources in a submodule. (CVE-2015-7545)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Git release notes :

Some protocols (like git-remote-ext) can execute arbitrary code found in the URL. The URLs that submodules use may come from arbitrary sources (e.g., .gitmodules files in a remote repository), and can hurt those who blindly enable recursive fetch. Restrict the allowed protocols to well known and safe ones.

New mercurial packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix a security issue.

From Red Hat Security Advisory 2015:2561 :

Updated git packages that fix one security issue are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Git is a distributed revision control system with a decentralized architecture. As opposed to centralized version control systems with a client-server model, Git ensures that each working copy of a Git repository is an exact copy with complete revision history. This not only allows the user to work on and contribute to projects without the need to have permission to push the changes to their official repositories, but also makes it possible for the user to work with no network connection.

A flaw was found in the way the git-remote-ext helper processed certain URLs. If a user had Git configured to automatically clone submodules from untrusted repositories, an attacker could inject commands into the URL of a submodule, allowing them to execute arbitrary code on the user's system. (BZ#1269794)

All git users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.

ID	Name	Product	Family	Published	Updated	Severity
124923	EulerOS Virtualization 3.0.1.0 : git (EulerOS-SA-2019-1420)	Nessus	Huawei Local Security Checks	5/14/2019	5/23/2024	critical
87282	CentOS 7 : git (CESA-2015:2561)	Nessus	CentOS Local Security Checks	12/10/2015	1/4/2021	critical
87407	Ubuntu 14.04 LTS : Git vulnerability (USN-2835-1)	Nessus	Ubuntu Local Security Checks	12/16/2015	10/20/2023	critical
90849	GLSA-201605-01 : Git: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	5/3/2016	1/11/2021	critical
87339	Amazon Linux AMI : git (ALAS-2015-613)	Nessus	Amazon Linux Local Security Checks	12/15/2015	4/18/2018	critical
87589	SUSE SLES12 Security Update : Recommended update for git (SUSE-SU-2015:2325-1)	Nessus	SuSE Local Security Checks	12/22/2015	1/6/2021	critical
87742	Debian DSA-3435-1 : git - security update	Nessus	Debian Local Security Checks	1/6/2016	1/11/2021	critical
181027	Oracle Linux 6 / 7 : git19-git (ELSA-2015-2515)	Nessus	Oracle Linux Local Security Checks	9/7/2023	9/7/2023	critical
86450	FreeBSD : Git -- Execute arbitrary code (7f645ee5-7681-11e5-8519-005056ac623e)	Nessus	FreeBSD Local Security Checks	10/20/2015	1/6/2021	critical
90836	Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : mercurial (SSA:2016-123-01)	Nessus	Slackware Local Security Checks	5/3/2016	1/14/2021	critical
87272	Oracle Linux 7 : git (ELSA-2015-2561)	Nessus	Oracle Linux Local Security Checks	12/9/2015	1/14/2021	critical
87275	RHEL 7 : git (RHSA-2015:2561)	Nessus	Red Hat Local Security Checks	12/9/2015	10/24/2019	critical

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