遠端 Oracle Linux 8 主機中安裝的套件受到 ELSA-2020-4444 公告中提及的多個弱點影響。

  - 在 glibc 上游版本 2.14 中，發現在執行波狀符號擴充的方式中引入了一個釋放後使用弱點。包含後接有效使用者名稱之初始波狀符號的目錄路徑會受到此問題的影響。本機攻擊者可透過建立特別建構的路徑來利用此瑕疵，當此路徑由 glob 函式處理時，可能會導致任意程式碼執行。此問題已在 2.32 版本中修正。(CVE-2020-1752)

  - 在 PowerPC 上處理標記回溯資訊時，發現在使用 2.31 之前的 glibc 時會出現超出邊界寫入弱點。具體而言，反向追踪函式在儲存框架位址時並未正確檢查陣列邊界，進而造成拒絕服務，或導致潛在的執行程式碼。此弱點對系統可用性威脅最大。(CVE-2020-1751)

  - 如果 80 位長的雙精度函式輸入項中包含非正式位元模式，則  2.32 之前的 GNU C 程式庫 (即 glibc 或 libc6) 可在範圍縮小期間造成堆疊上緩衝區溢位，向 x86 目標上的 sinl 傳送 0x5d414141414141410000 值時即可看到。這與 sysdeps/ieee754/ldbl-96/e_rem_pio2l.c 有關。 (CVE-2020-10029)

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 CentOS Linux 8 主機上安裝的套件受到 CESA-2020: 4444 公告中所提及的多個弱點影響。

  - glibc：cosl、sinl、sincosl 和 tanl 函式的特製輸入中存在堆疊損毀問題 (CVE-2020-10029)

  - glibc：powerpc 的反向追蹤函式中存在陣列溢位問題 (CVE-2020-1751)

  - glibc：擴充 〜user 時，glob() 函式中會發生釋放後使用 (CVE-2020-1752)

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。

This update for glibc fixes the following issues :

  - CVE-2020-1752: Fixed a use after free in glob which     could have allowed a local attacker to create a     specially crafted path that, when processed by the glob     function, could potentially have led to arbitrary code     execution (bsc#1167631). This update was imported from     the SUSE:SLE-15:Update update project.

This update incorporates fixes from the upstream glibc 2.30 stable release branch, including 3 fixes for medium severity security vulnerabilities. (CVE-2020-10029, CVE-2020-1752, CVE-2020-1751)

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 version of F5 Networks BIG-IP installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the K49921213 advisory.

  - A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde     expansion was carried out. Directory paths containing an initial tilde followed by a valid username were     affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path     that, when processed by the glob function, would potentially lead to arbitrary code execution. This was     fixed in version 2.32. (CVE-2020-1752)

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

An update of the glibc package has been released.

This update incorporates fixes from the upstream glibc 2.29 stable release branch, including 3 fixes for medium severity security vulnerabilities. (CVE-2020-10029, CVE-2020-1752, CVE-2020-1751)

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.

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

  - A use-after-free vulnerability introduced in glibc     upstream version 2.14 was found in the way the tilde     expansion was carried out. Directory paths containing     an initial tilde followed by a valid username were     affected by this issue. A local attacker could exploit     this flaw by creating a specially crafted path that,     when processed by the glob function, would potentially     lead to arbitrary code execution. This was fixed in     version 2.32.(CVE-2020-1752)

  - The GNU C Library (aka glibc or libc6) before 2.32     could overflow an on-stack buffer during range     reduction if an input to an 80-bit long double function     contains a non-canonical bit pattern, a seen when     passing a 0x5d414141414141410000 value to sinl on x86     targets. This is related to     sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.(CVE-2020-10029)

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 Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4416-1 advisory.

    Florian Weimer discovered that the GNU C Library incorrectly handled certain memory operations. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-12133)

    It was discovered that the GNU C Library incorrectly handled certain SSE2-optimized memmove operations. A     remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-18269)

    It was discovered that the GNU C Library incorrectly handled certain pathname operations. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11236)

    It was discovered that the GNU C Library incorrectly handled certain AVX-512-optimized mempcpy operations.
    A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11237)

    It was discovered that the GNU C Library incorrectly handled certain hostname loookups. A remote attacker     could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly     execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-19591)

    Jakub Wilk discovered that the GNU C Library incorrectly handled certain memalign functions. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-6485)

    It was discovered that the GNU C Library incorrectly ignored the LD_PREFER_MAP_32BIT_EXEC environment     variable after security transitions. A local attacker could use this issue to bypass ASLR restrictions.
    (CVE-2019-19126)

    It was discovered that the GNU C Library incorrectly handled certain regular expressions. A remote     attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of     service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-9169)

    It was discovered that the GNU C Library incorrectly handled certain bit patterns. A remote attacker could     use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute     arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2020-10029)

    It was discovered that the GNU C Library incorrectly handled certain signal trampolines on PowerPC. A     remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. (CVE-2020-1751)

    It was discovered that the GNU C Library incorrectly handled tilde expansion. A remote attacker could use     this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2020-1752)

Tenable has extracted the preceding description block directly from the Ubuntu 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 Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0122 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2019-19126:
    On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the     LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition,     allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass     ASLR for a setuid program.

    CVE-2020-10029:
    The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range     reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when     passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to     sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.

    CVE-2020-1751:
    An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on     PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the     frame address, resulting in a denial of service or potential code execution. The highest threat from this     vulnerability is to system availability.

    CVE-2020-1752:
    A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde     expansion was carried out. Directory paths containing an initial tilde followed by a valid username were     affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path     that, when processed by the glob function, would potentially lead to arbitrary code execution. This was     fixed in version 2.32.

    CVE-2020-6096:
    An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc     2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative     value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the     'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-     of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows     for program execution to continue in scenarios where a segmentation fault or crash should have occurred.
    The dangers occur in that subsequent execution and iterations of this code will be executed with this     corrupted data.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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.

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out.
Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution.
This was fixed in version 2.32.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
142780	Oracle Linux 8：glibc (ELSA-2020-4444)	Nessus	Oracle Linux Local Security Checks	2020/11/12	2024/11/1	high
145977	CentOS 8：glibc (CESA-2020: 4444)	Nessus	CentOS Local Security Checks	2021/2/1	2024/1/24	high
135264	openSUSE Security Update : glibc (openSUSE-2020-467)	Nessus	SuSE Local Security Checks	2020/4/7	2020/5/21	high
135209	Fedora 31 : glibc (2020-244efc27af)	Nessus	Fedora Local Security Checks	2020/4/6	2024/3/19	high
184271	F5 Networks BIG-IP : glibc vulnerability (K49921213)	Nessus	F5 Networks Local Security Checks	2023/11/2	2024/5/7	high
202862	Photon OS 3.0: Glibc PHSA-2020-3.0-0097	Nessus	PhotonOS Local Security Checks	2024/7/22	2024/7/22	high
135372	Fedora 30 : glibc (2020-7f625c5ea8)	Nessus	Fedora Local Security Checks	2020/4/10	2024/3/19	high
137017	EulerOS 2.0 SP5 : glibc (EulerOS-SA-2020-1599)	Nessus	Huawei Local Security Checks	2020/6/2	2024/3/8	high
138166	Ubuntu 16.04 LTS / 18.04 LTS : GNU C Library vulnerabilities (USN-4416-1)	Nessus	Ubuntu Local Security Checks	2020/7/7	2025/9/3	critical
236471	Alibaba Cloud Linux 3 : 0122: glibc (ALINUX3-SA-2022:0122)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	high
503001	Siemens SIMATIC S7-1500 TM MFP BIOS Use After Free (CVE-2020-1752)	Tenable OT Security	Tenable.ot	2025/2/25	2025/3/10	high

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