Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  -python-cryptography 3.2 は、有効な PKCS#1 v1.5 暗号化テキストの時限処理による、RSA 復号化 API の Bleichenbacherv　タイミング攻撃に脆弱です。(CVE-2020-25659)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

This update for python-cryptography fixes the following issues :

CVE-2020-25659: Attempted to mitigate Bleichenbacher attacks on RSA decryption (bsc#1178168).

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.

It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2930 advisory.

    python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext. (CVE-2020-25659)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

According to the versions of the python-cryptography package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext. (CVE-2020-25659)

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.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0604-1 advisory.

  - python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext. (CVE-2020-25659)

  - In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically     encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the     Fernet class. (CVE-2020-36242)

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

The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2021:1608 advisory.

  - python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext. (CVE-2020-25659)

  - In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically     encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the     Fernet class. (CVE-2020-36242)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext. (CVE-2020-25659)

Note that Nessus relies on the presence of the package as reported by the vendor.

This update for python-cryptography fixes the following issues :

  - CVE-2020-25659: Attempted to mitigate Bleichenbacher     attacks on RSA decryption (bsc#1178168). This update was     imported from the SUSE:SLE-15-SP2:Update update project.

According to the versions of the python-cryptography package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext.(CVE-2020-25659)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization python-cryptography security advisory.

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

According to the versions of the python-cryptography packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via     timed processing of valid PKCS#1 v1.5 ciphertext.(CVE-2020-25659)

Tenable has extracted the preceding description block directly from the EulerOS python-cryptography 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 CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:1608 advisory.

  - python-cryptography: bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)

  - python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads     could result in an integer overflow and lead to buffer overflows (CVE-2020-36242)

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-2021:3254 advisory.

    Python is an interpreted, interactive, object-oriented programming language, which includes modules,     classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to     many system calls and libraries, as well as to various windowing systems.

    The following packages have been upgraded to a later upstream version: rh-python38-python (3.8.11).
    (BZ#1969523)

    Security Fix(es):

    * python-cryptography: Bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)

    * python: Unsafe use of eval() on data retrieved via HTTP in the test suite (CVE-2020-27619)

    * python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

    * python-jinja2: ReDoS vulnerability due to the sub-pattern (CVE-2020-28493)

    * python-cryptography: Large inputs for symmetric encryption can trigger integer overflow leading to     buffer overflow (CVE-2020-36242)

    * python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

    * python: Information disclosure via pydoc (CVE-2021-3426)

    * python-babel: Relative path traversal allows attacker to load arbitrary locale files and execute     arbitrary code (CVE-2021-20095)

    * python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in     query parameters (CVE-2021-23336)

    * python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957)

    * python-ipaddress: Improper input validation of octal strings (CVE-2021-29921)

    * python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503)

    * python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572)

    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 information

    * Changes in the default separator for the Python urllib parsing functions

    To mitigate the Web Cache Poisoning CVE-2021-23336 in the Python urllib library, the default separator for     the urllib.parse.parse_qsl and urllib.parse.parse_qs functions is being changed from both ampersand (&)     and semicolon (;) to only an ampersand.

    The change of the default separator is potentially backwards incompatible, therefore Red Hat provides a     way to configure the behavior in Python packages where the default separator has been changed. In     addition, the affected urllib parsing functions issue a warning if they detect that a customers     application has been affected by the change.

    For more information, see the Knowledgebase article Mitigation of Web Cache Poisoning in the Python     urllib library (CVE-2021-23336) linked from the References section.

    * The Python ipaddress module no longer allows leading zeros in IPv4 addresses

    To mitigate CVE-2021-29921, the Python ipaddress module now rejects IPv4 addresses with leading zeros     with an AddressValueError: Leading zeros are not permitted error.

    Customers who rely on the previous behavior can pre-process their IPv4 address inputs to strip the leading     zeros off. For details, see the Red Hat Software Collections 3.7 Release Notes.

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
229914	Linux Distros のパッチ未適用の脆弱性: CVE-2020-25659	Nessus	Misc.	2025/3/5	2025/8/20	medium
143836	SUSE SLES12 Security Update : python-cryptography (SUSE-SU-2020:3629-1)	Nessus	SuSE Local Security Checks	2020/12/9	2024/2/5	medium
241717	Amazon Linux 2 : python-cryptography (ALAS-2025-2930)	Nessus	Amazon Linux Local Security Checks	2025/7/10	2025/7/14	high
195242	EulerOS 2.0 SP10 : python-cryptography (EulerOS-SA-2024-1576)	Nessus	Huawei Local Security Checks	2024/5/9	2024/5/9	medium
172065	SUSE SLES15 Security Update : python-cryptography, python-cryptography-vectors (SUSE-SU-2023:0604-1)	Nessus	SuSE Local Security Checks	2023/3/3	2023/7/14	critical
157515	AlmaLinux 8 : python-cryptography (ALSA-2021:1608)	Nessus	Alma Linux Local Security Checks	2022/2/9	2023/11/13	critical
229914	Linux Distros Unpatched Vulnerability : CVE-2020-25659	Nessus	Misc.	2025/3/5	2025/8/20	medium
143511	openSUSE Security Update : python-cryptography (openSUSE-2020-2173)	Nessus	SuSE Local Security Checks	2020/12/7	2024/2/6	medium
143680	SUSE SLED15 / SLES15 Security Update : python-cryptography (SUSE-SU-2020:3592-1)	Nessus	SuSE Local Security Checks	2020/12/9	2024/2/6	medium
202653	EulerOS Virtualization 2.10.0 : python-cryptography (EulerOS-SA-2024-1990)	Nessus	Huawei Local Security Checks	2024/7/18	2024/7/18	medium
202942	EulerOS 2.0 SP8 : python-cryptography (EulerOS-SA-2024-2048)	Nessus	Huawei Local Security Checks	2024/7/22	2024/7/22	medium
193025	EulerOS 2.0 SP9 : python-cryptography (EulerOS-SA-2024-1515)	Nessus	Huawei Local Security Checks	2024/4/8	2024/4/8	medium
195246	EulerOS 2.0 SP10 : python-cryptography (EulerOS-SA-2024-1599)	Nessus	Huawei Local Security Checks	2024/5/9	2024/5/9	medium
149778	CentOS 8 : python-cryptography (CESA-2021:1608)	Nessus	CentOS Local Security Checks	2021/5/19	2023/12/29	critical
152781	RHEL 7 : rh-python38 (RHSA-2021:3254)	Nessus	Red Hat Local Security Checks	2021/8/24	2025/9/10	high

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