遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2020: 2593 公告中提及的弱點影響。

  - python-psutil：未正確處理 refcount 所致的雙重釋放 (CVE-2019-18874)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Oracle Linux 8 主機中安裝的套件受到 ELSA-2021-4162 公告中提及的多個弱點影響。

  - python/cpython 套件 0 至 3.6.13 之前版本、3.7.0 至 3.7.10 之前版本、3.8.0 至 3.8.8 之前版本、3.9.0 至 3.9.2 之前版本容易受到 Web 快取毒害攻擊，攻擊者可使用一個稱為參數偽裝的向量透過 urllib.parse.parse_qsl 和 urllib.parse.parse_qs 發動攻擊。當攻擊者可使用分號 (;) 分隔查詢參數時，可造成 Proxy (以預設組態執行) 和伺服器之間的要求解譯不同。這可導致將惡意要求快取為完全安全的要求，因為 Proxy 通常不會將分號視為分隔符號，因此不會將其包含在無索引鍵參數的快取金鑰中。(CVE-2021-23336)

  - 5.6.5 之前的 psutil (即 python-psutil) 可重複釋放。這是在將系統資料轉換為 Python 物件的 while 或 for 迴圈中未正確處理 refcount 所致。(CVE-2019-18874)

  - Babel 2.9.1 版之前的 Babel.Locale 允許攻擊者透過目錄遊走載入任意地區設定 .dat 檔案 (包含序列化的 Python 物件)，進而導致程式碼執行。(CVE-2021-42771)

  - 在 python-pip 處理 git 參照中 Unicode 分隔符號的方式中發現一個缺陷。遠端攻擊者可能利用此問題在存放庫上安裝不同的修訂版。此弱點對資料完整性的威脅最大。此問題已在 python-pip 版本 21.1 中修正。(CVE-2021-3572)

  - 這會影響 0.0.0 和 2.11.3 之前版本中的套件 jinja2。ReDoS 弱點主要是由於「_punctuation_re regex」運算子及其使用多個萬用字元所致。最後一個萬用字元最容易遭到惡意利用，因為它會搜尋結尾的標點符號。透過 Markdown 格式化使用者內容 (而非 urlize 篩選器)，或透過實作要求逾時和限制處理程序記憶體，可減輕此問題造成的影響。(CVE-2020-28493)

  - 在 python-lxml 的 clean 模組 4.6.3 之前版本中發現 XSS 弱點。停用 safe_attrs_only 和表單引數時，Cleaner 類別不會移除 formaction 屬性，這會允許 JS 繞過清理程式。遠端攻擊者可惡意利用此瑕疵，針對與未正確清理的 HTML 互動的使用者執行任意 JS 程式碼。此問題已在 lxml 4.6.3 中得到修補。
    (CVE-2021-28957)

  - 在 Python G263.9.5 之前的版本中，ipaddress 程式庫未正確處理 IP 位址字串八位元中的前置零字元。在某些情況下，攻擊者可利用此問題繞過以 IP 位址為基礎的存取控制。(CVE-2021-29921)

  - Python 3 的 pydoc 中有一個瑕疵。本機或鄰近攻擊者若發現或能夠誘騙其他本機或鄰近使用者啟動 pydoc 伺服器，則可以存取此伺服器，並藉此洩漏他們通常無法存取的屬於其他使用者的敏感資訊。此瑕疵對資料機密性的風險最大。此瑕疵影響 Python 3.8.9 之前版本、Python 3.9.3 之前版本以及 Python 3.10.0a7 之前版本。(CVE-2021-3426)

  在 1.26.5 之前的 urllib3 中發現一個問題。當在授權元件中提供含有許多 @ 字元的 URL 時，授權規則運算式會出現災難性回溯，如果將 URL 作為參數傳遞或透過 HTTP 重新導向進行重新導向，則會造成拒絕服務。
    (CVE-2021-33503)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 8 主機上安裝的套件受到 RHSA-2021: 4162 公告中提及的多個弱點影響。

  - python-psutil：未正確處理 refcount 所致的雙重釋放 (CVE-2019-18874)

  - python：對測試套件中透過 HTTP 擷取的資料以不安全的方式使用 eval() (CVE-2020-27619)

  - python-jinja2：urlize 篩選器中的 ReDoS 弱點 (CVE-2020-28493)

  - python：透過在查詢參數中使用分號，經由 urllib.parse.parse_qsl 和 urllib.parse.parse_qs 造成 Web 快取毒害 (CVE-2021-23336)

  - python-lxml：遺漏對 formaction HTML5 屬性的輸入清理可能導致 XSS (CVE-2021-28957)

  - python-ipaddress：對八進位字串的輸入驗證不當 (CVE-2021-29921)

  - python-urllib3: 剖析 URL 的授權部分時存在 ReDoS 弱點 (CVE-2021-33503)

  - python：藉由 pydoc 造成資訊洩漏 (CVE-2021-3426)

  - python-pip：未正確處理 git 參照中的 unicode 分隔符號 (CVE-2021-3572)

  - python-babel：相對路徑遊走弱點允許攻擊者載入任意地區設定檔案並執行任意程式碼 (CVE-2021-42771)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

The remote AlmaLinux 8 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2021:4324 advisory.

  - psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount     mishandling within a while or for loop that converts system data into a Python object. (CVE-2019-18874)

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

The remote CentOS Linux 8 host has a package installed that is affected by a vulnerability as referenced in the CESA-2021:4324 advisory.

  - python-psutil: Double free because of refcount mishandling (CVE-2019-18874)

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

Update to 5.6.7 to fix CVE-2019-18874

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

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2635 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    Security Fix(es):

    * python-psutil: double free because of refcount mishandling (CVE-2019-18874)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1313 advisory.

    Red Hat Satellite is a systems management tool for Linux-based     infrastructure. It allows for provisioning, remote management, and     monitoring of multiple Linux deployments with a single centralized tool.

    Security Fix(es):

    * foreman: Managing repositories with their id via hammer does not respect the role filters     (CVE-2017-2662)
    * python-psutil: Double free because of refcount mishandling (CVE-2019-18874)
    * candlepin: netty: compression/decompression codecs don't enforce limits on buffer allocation sizes     (CVE-2020-11612)
    * foreman: world-readable OMAPI secret through the ISC DHCP server (CVE-2020-14335)
    * candlepin: resteasy-client: potential sensitive information leakage in JAX-RS RESTEasy Client's     WebApplicationException handling (CVE-2020-25633)
    * python-django: potential SQL injection via tolerance parameter in GIS functions and aggregates on     Oracle (CVE-2020-9402)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page(s) listed in the References section.

    Additional Changes:

    * Usability enhancements to Red Hat's Simple Content Access mode and Satellite

    * Usability improvements to enabling Remote Execution on your hosts.

    * Notifications in the UI to warn users when subscriptions are expiring.

    * Usability enhancements to enable Insights integration with Satellite.

    * Performance improvements to various aspects of the user interface and API.

    * Added support for OpenID Connect for authentication.

    * Usability improvements to the Satellite Installer.

    * Updated Ruby web server to the modern Puma application server which replaces Passenger.

    The items above are not a complete list of changes. This update also fixes     several bugs and adds various enhancements. Documentation for these changes     is available from the Release Notes document linked to in the References     section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:4162 advisory.

  - psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount     mishandling within a while or for loop that converts system data into a Python object. (CVE-2019-18874)

  - In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content     retrieved via HTTP. (CVE-2020-27619)

  - This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the     `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most     exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format     user content instead of the urlize filter, or by implementing request timeouts and limiting process     memory. (CVE-2020-28493)

  - The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before     3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and     urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query     parameters using a semicolon (;), they can cause a difference in the interpretation of the request between     the proxy (running with default configuration) and the server. This can result in malicious requests being     cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and     therefore would not include it in a cache key of an unkeyed parameter. (CVE-2021-23336)

  - An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling     the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute     allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS     code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
    (CVE-2021-28957)

  - In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP     address string. This (in some situations) allows attackers to bypass access control that is based on IP     addresses. (CVE-2021-29921)

  - An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in     the authority component, the authority regular expression exhibits catastrophic backtracking, causing a     denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.
    (CVE-2021-33503)

  - There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince     another local or adjacent user to start a pydoc server could access the server and use it to disclose     sensitive information belonging to the other user that they would not normally be able to access. The     highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9,     Python versions before 3.9.3 and Python versions before 3.10.0a7. (CVE-2021-3426)

  - A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote     attacker could possibly use this issue to install a different revision on a repository. The highest threat     from this vulnerability is to data integrity. This is fixed in python-pip version 21.1. (CVE-2021-3572)

  - Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing     serialized Python objects) via directory traversal, leading to code execution. (CVE-2021-42771)

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

ID	Name	Product	Family	Published	Updated	Severity
138029	RHEL 7：OpenShift Container Platform 4.2.36 python-psutil (RHSA-2020: 2593)	Nessus	Red Hat Local Security Checks	7/1/2020	6/3/2024	high
155969	Oracle Linux 8：python38: 3.8 / 和 / python38-devel: 3.8 (ELSA-2021-4162)	Nessus	Oracle Linux Local Security Checks	12/10/2021	1/16/2024	critical
155193	RHEL 8：python38: 3.8 和 python38-devel：3.8 (RHSA-2021: 4162)	Nessus	Red Hat Local Security Checks	11/11/2021	1/16/2024	critical
157579	AlmaLinux 8 : python-psutil (ALSA-2021:4324)	Nessus	Alma Linux Local Security Checks	2/9/2022	2/14/2022	high
155046	CentOS 8 : python-psutil (CESA-2021:4324)	Nessus	CentOS Local Security Checks	11/11/2021	11/11/2021	high
134056	Fedora 30 : python-psutil (2020-a06ebafad8)	Nessus	Fedora Local Security Checks	2/26/2020	3/26/2024	high
137756	RHEL 7 : OpenShift Container Platform 4.3.26 python-psutil (RHSA-2020:2635)	Nessus	Red Hat Local Security Checks	6/24/2020	6/3/2024	high
148903	RHEL 7 : Satellite 6.9 Release (Moderate) (RHSA-2021:1313)	Nessus	Red Hat Local Security Checks	4/21/2021	6/3/2024	critical
184819	Rocky Linux 8 : python38:3.8 and python38-devel:3.8 (RLSA-2021:4162)	Nessus	Rocky Linux Local Security Checks	11/7/2023	1/16/2024	critical

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