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.

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.

The remote MiracleLinux 3 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2013-679:01 advisory.

    GnuPG (GNU Privacy Guard) is a GNU utility for encrypting data and creating digital signatures. GnuPG has     advanced key management capabilities and is compliant with the proposed OpenPGP Internet standard     described in RFC2440. Since GnuPG doesn't use any patented algorithm, it is not compatible with any     version of PGP2 (PGP2.x uses only IDEA for symmetric-key encryption, which is patented worldwide).
    Security issues fixed with this release:
     CVE-2012-6085     The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when     importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of     service (application crash) via a crafted length field of an OpenPGP packet.
     CVE-2013-4242     GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows     local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka     Flush+Reload.
     CVE-2013-4351     GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as     if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended     cryptographic protection mechanisms by leveraging the subkey.
     CVE-2013-4402     GnuPG 1.4.x before 1.4.15 and 2.0.x before 2.0.22 allows remote attackers to cause a denial of service     (infinite recursion) via a crafted OpenPGP message.

Tenable has extracted the preceding description block directly from the MiracleLinux 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 MiracleLinux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2014-005:01 advisory.

    GnuPG is GNU's tool for secure communication and data storage. It can be used to encrypt data and to     create digital signatures. It includes an advanced key management facility and is compliant with the     proposed OpenPGP Internet standard as described in RFC2440 and the S/MIME standard as described by several     RFCs.
    GnuPG 2.0 is a newer version of GnuPG with additional support for S/MIME. It has a different design     philosophy that splits functionality up into several modules. The S/MIME and smartcard functionality is     provided by the gnupg2-smime package.
    Security issues fixed with this release:
     CVE-2012-6085     The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when     importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of     service (application crash) via a crafted length field of an OpenPGP packet.
     CVE-2013-4351     GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as     if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended     cryptographic protection mechanisms by leveraging the subkey.
     CVE-2013-4402     GnuPG 1.4.x before 1.4.15 and 2.0.x before 2.0.22 allows remote attackers to cause a denial of service     (infinite recursion) via a crafted OpenPGP message.

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

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

This update for gpg2 provides the following fixes :

  - #780943: Set proper file permissions when en/de-crypting     files.

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

  - #808958: Select proper ciphers when running in FIPS     mode.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-1459 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

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.

This update of gpg2 fixes two security issues :

  - fix for CVE-2012-6085 (bnc#798465) added     gpg2-CVE-2012-6085.patch

  - fix for bnc#780943 added     gpg2-set_umask_before_open_outfile.patch

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
70601	RHEL 5 : gnupg (RHSA-2013:1458)	Nessus	Red Hat 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
288927	MiracleLinux 3 : gnupg-1.4.5-18.AXS3 (AXSA:2013-679:01)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	critical
291511	MiracleLinux 4 : gnupg2-2.0.14-6.AXS4 (AXSA:2014-005:01)	Nessus	Miracle Linux Local Security Checks	2026/1/19	2026/1/19	high
63462	Fedora 18 : gnupg-1.4.13-2.fc18 (2013-0377)	Nessus	Fedora Local Security Checks	2013/1/10	2021/1/11	medium
68951	SuSE 11.3 Security Update : gpg2 (SAT Patch Number 7919)	Nessus	SuSE Local Security Checks	2013/7/18	2021/1/19	medium
68952	SuSE 11.3 Security Update : gpg2 (SAT Patch Number 7919)	Nessus	SuSE Local Security Checks	2013/7/18	2021/1/19	medium
70598	Oracle Linux 5 / 6 : gnupg2 (ELSA-2013-1459)	Nessus	Oracle Linux Local Security Checks	2013/10/25	2024/10/22	high
75019	openSUSE Security Update : gpg2 (openSUSE-SU-2013:0880-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/19	medium

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