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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 : 2018-10-02
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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 ~~esm~~~ Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 ~~lts~~~ Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 ~~lts~~~ 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 0.1.0 Version Details Vulnerabilities
7 Application Gnupg Libgcrypt 0.2.0 Version Details Vulnerabilities
8 Application Gnupg Libgcrypt 0.2.6 Version Details Vulnerabilities
9 Application Gnupg Libgcrypt 0.2.8 Version Details Vulnerabilities
10 Application Gnupg Libgcrypt 0.2.10 Version Details Vulnerabilities
11 Application Gnupg Libgcrypt 0.2.15 Version Details Vulnerabilities
12 Application Gnupg Libgcrypt 0.2.17 Version Details Vulnerabilities
13 Application Gnupg Libgcrypt 0.2.18 Version Details Vulnerabilities
14 Application Gnupg Libgcrypt 0.2.19 Version Details Vulnerabilities
15 Application Gnupg Libgcrypt 0.3.0 Version Details Vulnerabilities
16 Application Gnupg Libgcrypt 0.3.1 Version Details Vulnerabilities
17 Application Gnupg Libgcrypt 0.3.2 Version Details Vulnerabilities
18 Application Gnupg Libgcrypt 0.3.3 Version Details Vulnerabilities
19 Application Gnupg Libgcrypt 0.3.4 Version Details Vulnerabilities
20 Application Gnupg Libgcrypt 0.3.5 Version Details Vulnerabilities
21 Application Gnupg Libgcrypt 0.4.0 Version Details Vulnerabilities
22 Application Gnupg Libgcrypt 0.4.1 Version Details Vulnerabilities
23 Application Gnupg Libgcrypt 0.4.2 Version Details Vulnerabilities
24 Application Gnupg Libgcrypt 0.4.3 Version Details Vulnerabilities
25 Application Gnupg Libgcrypt 0.4.4 Version Details Vulnerabilities
26 Application Gnupg Libgcrypt 0.4.5 Version Details Vulnerabilities
27 Application Gnupg Libgcrypt 0.9.0 Version Details Vulnerabilities
28 Application Gnupg Libgcrypt 0.9.1 Version Details Vulnerabilities
29 Application Gnupg Libgcrypt 0.9.2 Version Details Vulnerabilities
30 Application Gnupg Libgcrypt 0.9.3 Version Details Vulnerabilities
31 Application Gnupg Libgcrypt 0.9.4 Version Details Vulnerabilities
32 Application Gnupg Libgcrypt 0.9.5 Version Details Vulnerabilities
33 Application Gnupg Libgcrypt 0.9.6 Version Details Vulnerabilities
34 Application Gnupg Libgcrypt 0.9.7 Version Details Vulnerabilities
35 Application Gnupg Libgcrypt 0.9.8 Version Details Vulnerabilities
36 Application Gnupg Libgcrypt 0.9.9 Version Details Vulnerabilities
37 Application Gnupg Libgcrypt 0.9.10 Version Details Vulnerabilities
38 Application Gnupg Libgcrypt 0.9.11 Version Details Vulnerabilities
39 Application Gnupg Libgcrypt 1.0.0 Version Details Vulnerabilities
40 Application Gnupg Libgcrypt 1.0.1 Version Details Vulnerabilities
41 Application Gnupg Libgcrypt 1.0.2 Version Details Vulnerabilities
42 Application Gnupg Libgcrypt 1.0.3 Version Details Vulnerabilities
43 Application Gnupg Libgcrypt 1.0.4 Version Details Vulnerabilities
44 Application Gnupg Libgcrypt 1.1.0 Version Details Vulnerabilities
45 Application Gnupg Libgcrypt 1.1.2 Version Details Vulnerabilities
46 Application Gnupg Libgcrypt 1.1.3 Version Details Vulnerabilities
47 Application Gnupg Libgcrypt 1.1.4 Version Details Vulnerabilities
48 Application Gnupg Libgcrypt 1.1.5 Version Details Vulnerabilities
49 Application Gnupg Libgcrypt 1.1.6 Version Details Vulnerabilities
50 Application Gnupg Libgcrypt 1.1.7 Version Details Vulnerabilities
51 Application Gnupg Libgcrypt 1.1.8 Version Details Vulnerabilities
52 Application Gnupg Libgcrypt 1.1.9 Version Details Vulnerabilities
53 Application Gnupg Libgcrypt 1.1.10 Version Details Vulnerabilities
54 Application Gnupg Libgcrypt 1.1.11 Version Details Vulnerabilities
55 Application Gnupg Libgcrypt 1.1.12 Version Details Vulnerabilities
56 Application Gnupg Libgcrypt 1.1.42 Version Details Vulnerabilities
57 Application Gnupg Libgcrypt 1.1.43 Version Details Vulnerabilities
58 Application Gnupg Libgcrypt 1.1.44 Version Details Vulnerabilities
59 Application Gnupg Libgcrypt 1.1.90 Version Details Vulnerabilities
60 Application Gnupg Libgcrypt 1.1.91 Version Details Vulnerabilities
61 Application Gnupg Libgcrypt 1.1.92 Version Details Vulnerabilities
62 Application Gnupg Libgcrypt 1.1.93 Version Details Vulnerabilities
63 Application Gnupg Libgcrypt 1.1.94 Version Details Vulnerabilities
64 Application Gnupg Libgcrypt 1.2.0 Version Details Vulnerabilities
65 Application Gnupg Libgcrypt 1.2.1 Version Details Vulnerabilities
66 Application Gnupg Libgcrypt 1.2.2 Version Details Vulnerabilities
67 Application Gnupg Libgcrypt 1.2.3 Version Details Vulnerabilities
68 Application Gnupg Libgcrypt 1.2.4 Version Details Vulnerabilities
69 Application Gnupg Libgcrypt 1.3.0 Version Details Vulnerabilities
70 Application Gnupg Libgcrypt 1.3.1 Version Details Vulnerabilities
71 Application Gnupg Libgcrypt 1.3.2 Version Details Vulnerabilities
72 Application Gnupg Libgcrypt 1.4.0 Version Details Vulnerabilities
73 Application Gnupg Libgcrypt 1.4.1 RC1 Version Details Vulnerabilities
74 Application Gnupg Libgcrypt 1.4.1 Version Details Vulnerabilities
75 Application Gnupg Libgcrypt 1.4.2 Version Details Vulnerabilities
76 Application Gnupg Libgcrypt 1.4.2 RC1 Version Details Vulnerabilities
77 Application Gnupg Libgcrypt 1.4.2 RC2 Version Details Vulnerabilities
78 Application Gnupg Libgcrypt 1.4.3 Version Details Vulnerabilities
79 Application Gnupg Libgcrypt 1.4.4 Version Details Vulnerabilities
80 Application Gnupg Libgcrypt 1.4.5 Version Details Vulnerabilities
81 Application Gnupg Libgcrypt 1.4.6 Version Details Vulnerabilities
82 Application Gnupg Libgcrypt 1.5.0 Version Details Vulnerabilities
83 Application Gnupg Libgcrypt 1.5.0 Beta1 Version Details Vulnerabilities
84 Application Gnupg Libgcrypt 1.5.1 Version Details Vulnerabilities
85 Application Gnupg Libgcrypt 1.5.2 Version Details Vulnerabilities
86 Application Gnupg Libgcrypt 1.5.3 Version Details Vulnerabilities
87 Application Gnupg Libgcrypt 1.5.4 Version Details Vulnerabilities
88 Application Gnupg Libgcrypt 1.5.5 Version Details Vulnerabilities
89 Application Gnupg Libgcrypt 1.5.6 Version Details Vulnerabilities
90 Application Gnupg Libgcrypt 1.6.0 Version Details Vulnerabilities
91 Application Gnupg Libgcrypt 1.6.1 Version Details Vulnerabilities
92 Application Gnupg Libgcrypt 1.6.2 Version Details Vulnerabilities
93 Application Gnupg Libgcrypt 1.6.3 Version Details Vulnerabilities
94 Application Gnupg Libgcrypt 1.6.4 Version Details Vulnerabilities
95 Application Gnupg Libgcrypt 1.6.5 Version Details Vulnerabilities
96 Application Gnupg Libgcrypt 1.6.6 Version Details Vulnerabilities
97 Application Gnupg Libgcrypt 1.7.0 Version Details Vulnerabilities
98 Application Gnupg Libgcrypt 1.7.1 Version Details Vulnerabilities
99 Application Gnupg Libgcrypt 1.7.2 Version Details Vulnerabilities
100 Application Gnupg Libgcrypt 1.7.3 Version Details Vulnerabilities
101 Application Gnupg Libgcrypt 1.7.4 Version Details Vulnerabilities
102 Application Gnupg Libgcrypt 1.7.5 Version Details Vulnerabilities
103 Application Gnupg Libgcrypt 1.7.6 Version Details Vulnerabilities
104 Application Gnupg Libgcrypt 1.7.7 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 2
Gnupg Libgcrypt 99

- References For CVE-2017-7526

https://www.debian.org/security/2017/dsa-3960
DEBIAN DSA-3960
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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 CONFIRM
https://usn.ubuntu.com/3733-1/
UBUNTU USN-3733-1
https://usn.ubuntu.com/3733-2/
UBUNTU USN-3733-2
https://www.debian.org/security/2017/dsa-3901
DEBIAN DSA-3901
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a CONFIRM
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://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce CONFIRM

- 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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