The keyring DB in GnuPG before 2.1.2 does not properly handle invalid packets, which allows remote attackers to cause a denial of service (invalid read and use-after-free) via a crafted keyring file.

According to the versions of the gnupg2 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The keyring DB in GnuPG before 2.1.2 does not properly     handle invalid packets, which allows remote attackers     to cause a denial of service (invalid read and     use-after-free) via a crafted keyring     file.(CVE-2015-1606)

  - kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x     before 2.0.27, and 2.1.x before 2.1.2 does not properly     handle bitwise left-shifts, which allows remote     attackers to cause a denial of service (invalid read     operation) via a crafted keyring file, related to sign     extensions and 'memcpy with overlapping     ranges.'(CVE-2015-1607)

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 gnupg2 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x     before 2.0.27, and 2.1.x before 2.1.2 does not properly     handle bitwise left-shifts, which allows remote     attackers to cause a denial of service (invalid read     operation) via a crafted keyring file, related to sign     extensions and 'memcpy with overlapping     ranges.'(CVE-2015-1607)

  - The keyring DB in GnuPG before 2.1.2 does not properly     handle invalid packets, which allows remote attackers     to cause a denial of service (invalid read and     use-after-free) via a crafted keyring     file.(CVE-2015-1606)

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 gnupg2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The do_uncompress function in g10/compress.c in GnuPG     1.x before 1.4.17 and 2.x before 2.0.24 allows     context-dependent attackers to cause a denial of     service (infinite loop) via malformed compressed     packets, as demonstrated by an a3 01 5b ff byte     sequence.(CVE-2014-4617)

  - kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x     before 2.0.27, and 2.1.x before 2.1.2 does not properly     handle bitwise left-shifts, which allows remote     attackers to cause a denial of service (invalid read     operation) via a crafted keyring file, related to sign     extensions and 'memcpy with overlapping     ranges.'(CVE-2015-1607)

  - The keyring DB in GnuPG before 2.1.2 does not properly     handle invalid packets, which allows remote attackers     to cause a denial of service (invalid read and     use-after-free) via a crafted keyring     file.(CVE-2015-1606)

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 gnupg2 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x     before 2.0.27, and 2.1.x before 2.1.2 does not properly     handle bitwise left-shifts, which allows remote     attackers to cause a denial of service (invalid read     operation) via a crafted keyring file, related to sign     extensions and 'memcpy with overlapping     ranges.'(CVE-2015-1607)

  - The keyring DB in GnuPG before 2.1.2 does not properly     handle invalid packets, which allows remote attackers     to cause a denial of service (invalid read and     use-after-free) via a crafted keyring     file.(CVE-2015-1606)

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 gpg2 package was updated to fix the following security and non security issues :

  - CVE-2015-1606: Fixed invalid memory read using a garbled     keyring (bsc#918089).

  - CVE-2015-1607: Fixed memcpy with overlapping ranges     (bsc#918090).

  - bsc#955753: Fixed a regression of 'gpg --recv' due to     keyserver import filter (also boo#952347).

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.

The gpg2 package was updated to fix the following security and non security issues :

  - CVE-2015-1606: Fixed invalid memory read using a garbled     keyring (bsc#918089).

  - CVE-2015-1607: Fixed memcpy with overlapping ranges     (bsc#918090).

  - bsc#955753: Fixed a regression of 'gpg --recv' due to     keyserver import filter (also boo#952347).

This update for gpg2 fixes the following issues :

  - Fix cve-2015-1606 (bsc#918089)

  - Invalid memory read using a garbled keyring

  -     0001-Gpg-prevent-an-invalid-memory-read-using-a-garbled-     k.patch

  - Fix cve-2015-1607 (bsc#918090)

  - Memcpy with overlapping ranges

  -     0001-Use-inline-functions-to-convert-buffer-data-to-scal     a.patch

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.

GnuPG was updated to fix two memory handling issues with potential security impact :

  - CVE-2015-1606: Invalid memory read using a garbled     keyring (bsc#918089)

  - CVE-2015-1607: memcpy with overlapping ranges     (bsc#918090)

It was reported that gnupg2 keyring DB code did not reject packets which don't belong into a keyring, which may lead to invalid read of sizeof (int).

Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered that GnuPG was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. (CVE-2014-3591)

Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys.
(CVE-2015-0837)

Hanno Bock discovered that GnuPG incorrectly handled certain malformed keyrings. If a user or automated system were tricked into opening a malformed keyring, a remote attacker could use this issue to cause GnuPG to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-1606, CVE-2015-1607)

In addition, this update improves GnuPG security by validating that the keys returned by keyservers match those requested.

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.

Multiple vulnerabilities were discovered in GnuPG, the GNU Privacy Guard :

CVE-2014-3591

The Elgamal decryption routine was susceptible to a side-channel attack discovered by researchers of Tel Aviv University. Ciphertext blinding was enabled to counteract it. Note that this may have a quite noticeable impact on Elgamal decryption performance.

CVE-2015-0837

The modular exponentiation routine mpi_powm() was susceptible to a side-channel attack caused by data-dependent timing variations when accessing its internal pre-computed table.

CVE-2015-1606

The keyring parsing code did not properly reject certain packet types not belonging in a keyring, which caused an access to memory already freed. This could allow remote attackers to cause a denial of service (crash) via crafted keyring files.

For the oldstable distribution (squeeze), those problems have been fixed in version 1.4.10-4+squeeze7.

For the stable distribution (wheezy), these problems have been fixed in version 1.4.12-7+deb7u7.

We recommend that you upgrade your gnupg 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.

Multiple vulnerabilities were discovered in GnuPG, the GNU Privacy Guard :

  - CVE-2014-3591     The Elgamal decryption routine was susceptible to a     side-channel attack discovered by researchers of Tel     Aviv University. Ciphertext blinding was enabled to     counteract it. Note that this may have a quite     noticeable impact on Elgamal decryption performance.

  - CVE-2015-0837     The modular exponentiation routine mpi_powm() was     susceptible to a side-channel attack caused by     data-dependent timing variations when accessing its     internal pre-computed table.

  - CVE-2015-1606     The keyring parsing code did not properly reject certain     packet types not belonging in a keyring, which caused an     access to memory already freed. This could allow remote     attackers to cause a denial of service (crash) via     crafted keyring files.

ID	Name	Product	Family	Severity
142256	EulerOS 2.0 SP2 : gnupg2 (EulerOS-SA-2020-2348)	Nessus	Huawei Local Security Checks	medium
140856	EulerOS 2.0 SP3 : gnupg2 (EulerOS-SA-2020-2089)	Nessus	Huawei Local Security Checks	medium
136266	EulerOS Virtualization for ARM 64 3.0.2.0 : gnupg2 (EulerOS-SA-2020-1563)	Nessus	Huawei Local Security Checks	medium
135651	EulerOS Virtualization 3.0.2.2 : gnupg2 (EulerOS-SA-2020-1489)	Nessus	Huawei Local Security Checks	medium
133905	EulerOS 2.0 SP5 : gnupg2 (EulerOS-SA-2020-1104)	Nessus	Huawei Local Security Checks	medium
87644	SUSE SLED12 / SLES12 Security Update : gpg2 (SUSE-SU-2015:2171-2)	Nessus	SuSE Local Security Checks	medium
87392	openSUSE Security Update : gpg2 (openSUSE-2015-886)	Nessus	SuSE Local Security Checks	medium
87197	SUSE SLED12 / SLES12 Security Update : gpg2 (SUSE-SU-2015:2171-1)	Nessus	SuSE Local Security Checks	medium
87196	SUSE SLED11 / SLES11 Security Update : gpg2 (SUSE-SU-2015:2170-1)	Nessus	SuSE Local Security Checks	medium
87117	openSUSE Security Update : GnuPG (openSUSE-2015-840)	Nessus	SuSE Local Security Checks	medium
85045	Amazon Linux AMI : gnupg2 (ALAS-2015-574)	Nessus	Amazon Linux Local Security Checks	medium
82526	Ubuntu 14.04 LTS : GnuPG vulnerabilities (USN-2554-1)	Nessus	Ubuntu Local Security Checks	medium
82160	Debian DLA-175-1 : gnupg security update	Nessus	Debian Local Security Checks	medium
81794	Debian DSA-3184-1 : gnupg - security update	Nessus	Debian Local Security Checks	medium

Detections

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CVE-2015-1606

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