ID CVE-2015-7511
Summary Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.
References
Vulnerable Configurations
  • GnuPG Libgcrypt 1.6.4
    cpe:2.3:a:gnupg:libgcrypt:1.6.4
  • Debian Linux 8.0 (Jessie)
    cpe:2.3:o:debian:debian_linux:8.0
  • Debian Linux 7.0
    cpe:2.3:o:debian:debian_linux:7.0
  • Canonical Ubuntu Linux 15.10
    cpe:2.3:o:canonical:ubuntu_linux:15.10
  • Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:14.04:-:-:-:lts
  • Canonical Ubuntu Linux 12.04 LTS
    cpe:2.3:o:canonical:ubuntu_linux:12.04:-:-:-:lts
CVSS
Base: 1.9 (as of 21-04-2016 - 12:27)
Impact:
Exploitability:
CWE CWE-200
CAPEC
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2016-054-03.NASL
    description New libgcrypt packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.
    last seen 2019-02-21
    modified 2016-10-19
    plugin id 88911
    published 2016-02-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88911
    title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : libgcrypt (SSA:2016-054-03)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-1089-1.NASL
    description libgcrypt was updated to fix one security issue. This security issue was fixed : - CVE-2015-7511: Side-channel attack on ECDH with Weierstrass curves (bsc#965902). 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.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 90587
    published 2016-04-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90587
    title SUSE SLED12 / SLES12 Security Update : libgcrypt (SUSE-SU-2016:1089-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-EC4C27D766.NASL
    description New upstream release fixing CVE-2015-7511 low impact security issue. 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.
    last seen 2019-02-21
    modified 2016-10-18
    plugin id 92769
    published 2016-08-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92769
    title Fedora 23 : libgcrypt (2016-ec4c27d766)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_95B92E3BD45111E59794E8E0B747A45A.NASL
    description GnuPG reports : Mitigate side-channel attack on ECDH with Weierstrass curves.
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 88744
    published 2016-02-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88744
    title FreeBSD : libgcrypt -- side-channel attack on ECDH (95b92e3b-d451-11e5-9794-e8e0b747a45a)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-83CD045BCC.NASL
    description New upstream release fixing CVE-2015-7511 low impact security issue. 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.
    last seen 2019-02-21
    modified 2016-10-18
    plugin id 92535
    published 2016-07-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92535
    title Fedora 24 : libgcrypt (2016-83cd045bcc)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201610-04.NASL
    description The remote host is affected by the vulnerability described in GLSA-201610-04 (libgcrypt: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libgcrypt. Please review the CVE identifiers referenced below for details. Impact : Side-channel attacks can leak private key information. A separate critical bug allows an attacker who obtains 4640 bits from the RNG to trivially predict the next 160 bits of output. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 93946
    published 2016-10-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=93946
    title GLSA-201610-04 : libgcrypt: Multiple vulnerabilities
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-559.NASL
    description libgcrypt was updated to fix one security issue. This security issue was fixed : - CVE-2015-7511: Side-channel attack on ECDH with Weierstrass curves (bsc#965902). This update was imported from the SUSE:SLE-12:Update update project.
    last seen 2019-02-21
    modified 2016-10-13
    plugin id 90911
    published 2016-05-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90911
    title openSUSE Security Update : libgcrypt (openSUSE-2016-559)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3474.NASL
    description Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered that the ECDH secret decryption keys in applications using the libgcrypt20 library could be leaked via a side-channel attack. See https://www.cs.tau.ac.IL/~tromer/ecdh/ for details.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 88725
    published 2016-02-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88725
    title Debian DSA-3474-1 : libgcrypt20 - security update
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2896-1.NASL
    description Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered that Libgcrypt was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. 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.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 88747
    published 2016-02-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88747
    title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : libgcrypt11, libgcrypt20 vulnerability (USN-2896-1)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3478.NASL
    description Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered that the ECDH secret decryption keys in applications using the libgcrypt11 library could be leaked via a side-channel attack. See https://www.cs.tau.ac.IL/~tromer/ecdh/ for details.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 88741
    published 2016-02-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88741
    title Debian DSA-3478-1 : libgcrypt11 - security update
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-267.NASL
    description This update for libgcrypt fixes the following issues : - CVE-2015-7511: side-channel attack on ECDH with Weierstrass curves (boo#965902)
    last seen 2019-02-21
    modified 2016-10-13
    plugin id 88979
    published 2016-02-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88979
    title openSUSE Security Update : libgcrypt (openSUSE-2016-267)
refmap via4
bid 83253
debian
  • DSA-3474
  • DSA-3478
fedora FEDORA-2016-83cd045bcc
gentoo GLSA-201610-04
misc http://www.cs.tau.ac.IL/~tromer/ecdh/
mlist [gnupg-announce] 20160209 [Announce] Libgcrypt 1.6.5 with security fix released
suse openSUSE-SU-2016:1227
ubuntu USN-2896-1
Last major update 30-11-2016 - 22:01
Published 19-04-2016 - 17:59
Last modified 30-06-2017 - 21:29
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