Daniel Genkin, Itamar Pipman and Eran Tromer discovered that Elgamal encryption subkeys in applications using the libgcrypt11 library, for example GnuPG 2.x, could be leaked via a side-channel attack (see http://www.cs.tau.ac.il/~tromer/handsoff/).

This is fixed in Squeeze in version 1.4.5-2+squeeze2.

We recommend that you upgrade your libgcrypt11 packages.

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

Fix a side-channel attack on data-dependent timing variations in modular exponentiation, which can potentially lead to an information leak. (CVE-2015-0837)

Fix a side-channel attack which can potentially lead to an information leak. (CVE-2014-3591)

Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than CVE-2013-4576 , which was fixed in ALAS-2014-278. (CVE-2014-5270)

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

  - Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext     normalization and ciphertext randomization, which makes it easier for physically proximate attackers to     conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a     different vector than CVE-2013-4576. (CVE-2014-5270)

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

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

  - Libgcrypt before 1.5.4, as used in GnuPG and other     products, does not properly perform ciphertext     normalization and ciphertext randomization, which makes     it easier for physically proximate attackers to conduct     key-extraction attacks by leveraging the ability to     collect voltage data from exposed metal, a different     vector than CVE-2013-4576.(CVE-2014-5270)

  - libgcrypt before version 1.7.8 is vulnerable to a cache     side-channel attack resulting into a complete break of     RSA-1024 while using the left-to-right method for     computing the sliding-window expansion. The same attack     is believed to work on RSA-2048 with moderately more     computation. This side-channel requires that attacker     can run arbitrary software on the hardware where the     private RSA key is used.(CVE-2017-7526)

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.

According to the versions of the libgcrypt package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - Libgcrypt before 1.5.4, as used in GnuPG and other     products, does not properly perform ciphertext     normalization and ciphertext randomization, which makes     it easier for physically proximate attackers to conduct     key-extraction attacks by leveraging the ability to     collect voltage data from exposed metal, a different     vector than CVE-2013-4576.(CVE-2014-5270)

  - libgcrypt before version 1.7.8 is vulnerable to a cache     side-channel attack resulting into a complete break of     RSA-1024 while using the left-to-right method for     computing the sliding-window expansion. The same attack     is believed to work on RSA-2048 with moderately more     computation. This side-channel requires that attacker     can run arbitrary software on the hardware where the     private RSA key is used.(CVE-2017-7526)

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.

ID	名稱	產品	系列	已發布	已更新	嚴重性
82238	Debian DLA-93-1 : libgcrypt11 security update	Nessus	Debian Local Security Checks	2015/3/26	2021/1/11	low
85232	Amazon Linux AMI : libgcrypt (ALAS-2015-577)	Nessus	Amazon Linux Local Security Checks	2015/8/5	2019/12/16	medium
218347	Linux Distros Unpatched Vulnerability : CVE-2014-5270	Nessus	Misc.	2025/3/4	2025/9/29	high
126877	EulerOS 2.0 SP2 : libgcrypt (EulerOS-SA-2019-1750)	Nessus	Huawei Local Security Checks	2019/7/22	2025/2/25	medium
129199	EulerOS 2.0 SP3 : libgcrypt (EulerOS-SA-2019-2006)	Nessus	Huawei Local Security Checks	2019/9/24	2025/2/24	medium
130667	EulerOS 2.0 SP5 : libgcrypt (EulerOS-SA-2019-2205)	Nessus	Huawei Local Security Checks	2019/11/8	2025/2/24	medium
134478	EulerOS Virtualization for ARM 64 3.0.2.0 : libgcrypt (EulerOS-SA-2020-1189)	Nessus	Huawei Local Security Checks	2020/3/13	2025/2/21	medium

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