It was found that GnuPG was vulnerable to the Yarom/Falkner flush+reload cache side-channel attack on the RSA secret exponent. An attacker able to execute a process on the logical CPU that shared the L3 cache with the GnuPG process (such as a different local user or a user of a KVM guest running on the same host with the kernel same-page merging functionality enabled) could possibly use this flaw to obtain portions of the RSA secret key. (CVE-2013-4242)

A denial of service flaw was found in the way GnuPG parsed certain compressed OpenPGP packets. An attacker could use this flaw to send specially crafted input data to GnuPG, making GnuPG enter an infinite loop when parsing data. (CVE-2013-4402)

It was found that importing a corrupted public key into a GnuPG keyring database corrupted that keyring. An attacker could use this flaw to trick a local user into importing a specially crafted public key into their keyring database, causing the keyring to be corrupted and preventing its further use. (CVE-2012-6085)

It was found that GnuPG did not properly interpret the key flags in a PGP key packet. GPG could accept a key for uses not indicated by its holder. (CVE-2013-4351)

This update for gpg provides the following fixes :

  - Set proper file permissions when en/de-crypting files     (bnc#780943)

  - Fix an issue that could cause corruption of the public     keys database. (CVE-2012-6085, bnc#798465)

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.

KB Sriram discovered that GnuPG, the GNU Privacy Guard did not sufficiently sanitise public keys on import, which could lead to memory and keyring corruption.

The problem affects both version 1, in the 'gnupg' package, and version two, in the 'gnupg2' package.

Low impact security fix update.

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

This update for gpg provides the following fixes :

  - Set proper file permissions when en/de-crypting files.
    (bnc#780943)

  - Fix an issue that could cause corruption of the public     keys database. (CVE-2012-6085, bnc#798465)

An updated gnupg package that fixes multiple security issues is now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with the proposed OpenPGP Internet standard and the S/MIME standard.

It was found that GnuPG was vulnerable to the Yarom/Falkner flush+reload cache side-channel attack on the RSA secret exponent. An attacker able to execute a process on the logical CPU that shared the L3 cache with the GnuPG process (such as a different local user or a user of a KVM guest running on the same host with the kernel same-page merging functionality enabled) could possibly use this flaw to obtain portions of the RSA secret key. (CVE-2013-4242)

A denial of service flaw was found in the way GnuPG parsed certain compressed OpenPGP packets. An attacker could use this flaw to send specially crafted input data to GnuPG, making GnuPG enter an infinite loop when parsing data. (CVE-2013-4402)

It was found that importing a corrupted public key into a GnuPG keyring database corrupted that keyring. An attacker could use this flaw to trick a local user into importing a specially crafted public key into their keyring database, causing the keyring to be corrupted and preventing its further use. (CVE-2012-6085)

It was found that GnuPG did not properly interpret the key flags in a PGP key packet. GPG could accept a key for uses not indicated by its holder. (CVE-2013-4351)

Red Hat would like to thank Werner Koch for reporting the CVE-2013-4402 issue. Upstream acknowledges Taylor R Campbell as the original reporter.

All gnupg users are advised to upgrade to this updated package, which contains backported patches to correct these issues.

A denial of service flaw was found in the way GnuPG parsed certain compressed OpenPGP packets. An attacker could use this flaw to send specially crafted input data to GnuPG, making GnuPG enter an infinite loop when parsing data. (CVE-2013-4402)

It was found that importing a corrupted public key into a GnuPG keyring database corrupted that keyring. An attacker could use this flaw to trick a local user into importing a specially crafted public key into their keyring database, causing the keyring to be corrupted and preventing its further use. (CVE-2012-6085)

It was found that GnuPG did not properly interpret the key flags in a PGP key packet. GPG could accept a key for uses not indicated by its holder. (CVE-2013-4351)

The remote host is affected by the vulnerability described in GLSA-201402-24 (GnuPG, Libgcrypt: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in GnuPG and Libgcrypt.
      Please review the CVE identifiers referenced below for details.
  Impact :

    An unauthenticated remote attacker may be able to execute arbitrary code       with the privileges of the user running GnuPG, cause a Denial of Service       condition, or bypass security restrictions. Additionally, a side-channel       attack may allow a local attacker to recover a private key, please review       &ldquo;Flush+Reload: a High Resolution, Low Noise, L3 Cache Side-Channel       Attack&rdquo; in the References section for further details.
  Workaround :

    There is no known workaround at this time.

A vulnerability has been found and corrected in gnupg :

Versions of GnuPG <= 1.4.12 are vulnerable to memory access violations and public keyring database corruption when importing public keys that have been manipulated. An OpenPGP key can be fuzzed in such a way that gpg segfaults (or has other memory access violations) when importing the key (CVE-2012-6085).

The updated packages have been patched to correct this issue.

fix build on big endian arches, IDEA was buggy New upstream with CVE fix. New upstream with CVE fix. New upstream with CVE fix.

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

This update for gpg2 provides the following fixes :

  - Set proper file permissions when en/de-crypting files.
    (bnc#780943)

  - Fix an issue that could cause corruption of the public     keys database. (CVE-2012-6085, #798465)

  - Select proper ciphers when running in FIPS mode     (bnc#808958) Security Issue reference

  - CVE-2012-6085

The remote Oracle Linux 5 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2013-1458 advisory.

    - fix CVE-2013-4351 gpg treats no-usage-permitted keys as all-usages-permitted
    - fix CVE-2012-6085 GnuPG: read_block() corrupt key input validation
    - fix CVE-2013-4242 GnuPG susceptible to Yarom/Falkner side-channel attack
    - fix CVE-2013-4402 GnuPG: infinite recursion in the compressed packet parser

Tenable has extracted the preceding description block directly from the Oracle 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 Redhat Enterprise Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2013:1459 advisory.

    The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and     creating digital signatures, compliant with the proposed OpenPGP Internet     standard and the S/MIME standard.

    A denial of service flaw was found in the way GnuPG parsed certain     compressed OpenPGP packets. An attacker could use this flaw to send     specially crafted input data to GnuPG, making GnuPG enter an infinite loop     when parsing data. (CVE-2013-4402)

    It was found that importing a corrupted public key into a GnuPG keyring     database corrupted that keyring. An attacker could use this flaw to trick a     local user into importing a specially crafted public key into their keyring     database, causing the keyring to be corrupted and preventing its further     use. (CVE-2012-6085)

    It was found that GnuPG did not properly interpret the key flags in a PGP     key packet. GPG could accept a key for uses not indicated by its holder.
    (CVE-2013-4351)

    Red Hat would like to thank Werner Koch for reporting the CVE-2013-4402     issue. Upstream acknowledges Taylor R Campbell as the original reporter.

    All gnupg2 users are advised to upgrade to this updated package, which     contains backported patches to correct these issues.

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.

An updated gnupg2 package that fixes three security issues is now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with the proposed OpenPGP Internet standard and the S/MIME standard.

A denial of service flaw was found in the way GnuPG parsed certain compressed OpenPGP packets. An attacker could use this flaw to send specially crafted input data to GnuPG, making GnuPG enter an infinite loop when parsing data. (CVE-2013-4402)

It was found that importing a corrupted public key into a GnuPG keyring database corrupted that keyring. An attacker could use this flaw to trick a local user into importing a specially crafted public key into their keyring database, causing the keyring to be corrupted and preventing its further use. (CVE-2012-6085)

It was found that GnuPG did not properly interpret the key flags in a PGP key packet. GPG could accept a key for uses not indicated by its holder. (CVE-2013-4351)

Red Hat would like to thank Werner Koch for reporting the CVE-2013-4402 issue. Upstream acknowledges Taylor R Campbell as the original reporter.

All gnupg2 users are advised to upgrade to this updated package, which contains backported patches to correct these issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
70604	Scientific Linux Security Update : gnupg on SL5.x i386/x86_64 (20131024)	Nessus	Scientific Linux Local Security Checks	2013/10/25	2021/1/14	medium
83589	SUSE SLED10 / SLES10 Security Update : gpg (SUSE-SU-2013:1061-1)	Nessus	SuSE Local Security Checks	2015/5/20	2021/1/19	medium
63386	Debian DSA-2601-1 : gnupg, gnupg2 - missing input sanitation	Nessus	Debian Local Security Checks	2013/1/7	2021/1/11	medium
63461	Fedora 18 : gnupg2-2.0.19-7.fc18 (2013-0148)	Nessus	Fedora Local Security Checks	2013/1/10	2021/1/11	medium
63631	Fedora 16 : gnupg2-2.0.19-7.fc16 (2013-0222)	Nessus	Fedora Local Security Checks	2013/1/21	2021/1/11	medium
66958	SuSE 10 Security Update : gpg (ZYPP Patch Number 8575)	Nessus	SuSE Local Security Checks	2013/6/21	2021/1/19	medium
70601	RHEL 5 : gnupg (RHSA-2013:1458)	Nessus	Red Hat Local Security Checks	2013/10/25	2021/1/14	medium
70603	Scientific Linux Security Update : gnupg2 on SL5.x, SL6.x i386/x86_64 (20131024)	Nessus	Scientific Linux Local Security Checks	2013/10/25	2021/1/14	medium
70634	CentOS 5 : gnupg (CESA-2013:1458)	Nessus	CentOS Local Security Checks	2013/10/27	2021/1/4	medium
72638	GLSA-201402-24 : GnuPG, Libgcrypt: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2014/2/23	2021/1/6	medium
63374	Mandriva Linux Security Advisory : gnupg (MDVSA-2013:001-1)	Nessus	Mandriva Local Security Checks	2013/1/3	2021/1/6	medium
63634	Fedora 16 : gnupg-1.4.13-2.fc16 (2013-0477)	Nessus	Fedora Local Security Checks	2013/1/21	2021/1/11	medium
66955	SuSE 11.2 Security Update : gpg2 (SAT Patch Number 7737)	Nessus	SuSE Local Security Checks	2013/6/21	2021/1/19	medium
70597	Oracle Linux 5 : gnupg (ELSA-2013-1458)	Nessus	Oracle Linux Local Security Checks	2013/10/25	2024/10/22	critical
70602	RHEL 5 / 6 : gnupg2 (RHSA-2013:1459)	Nessus	Red Hat Local Security Checks	2013/10/25	2024/11/4	high
70635	CentOS 5 / 6 : gnupg2 (CESA-2013:1459)	Nessus	CentOS Local Security Checks	2013/10/27	2021/1/4	medium

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