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Vulnerability Details : CVE-2017-7526

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.
Publish Date : 2018-07-26 Last Update Date : 2019-10-09
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 310

- Products Affected By CVE-2017-7526

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
6 Application Gnupg Libgcrypt * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 2
Gnupg Libgcrypt 1

- References For CVE-2017-7526

https://usn.ubuntu.com/3733-2/
UBUNTU USN-3733-2
https://usn.ubuntu.com/3733-1/
UBUNTU USN-3733-1
http://www.securityfocus.com/bid/99338
BID 99338 Libgcrypt CVE-2017-7526 Information Disclosure Vulnerability Release Date:2017-07-04
http://www.securitytracker.com/id/1038915
SECTRACK 1038915
https://www.debian.org/security/2017/dsa-3901
DEBIAN DSA-3901
https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html
MLIST [gnupg-announce] 20170629 Libgcrypt 1.7.8 released to fix CVE-2017-7526
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=e6a3dc9900433bbc8ad362a595a3837318c28fa9 CONFIRM
https://eprint.iacr.org/2017/627
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 CONFIRM
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce CONFIRM
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a CONFIRM
https://www.debian.org/security/2017/dsa-3960
DEBIAN DSA-3960

- Metasploit Modules Related To CVE-2017-7526

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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