Ubuntu.comUB:CVE-2017-9526CVE-2017-9526
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.004 Low
EPSS
Percentile
73.4%
In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key
(from side-channel observation during the signing process) can easily
recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change
to store this session key in secure memory, to ensure that constant-time
point operations are used in the MPI library.
Bugs
Notes
| Author | Note |
|---|---|
| tyhicks | EdDSA support was added in 1.6.0 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | libgcrypt20 | < 1.6.5-2ubuntu0.3 | UNKNOWN |
| ubuntu | 16.10 | noarch | libgcrypt20 | < 1.7.2-2ubuntu1.1 | UNKNOWN |
| ubuntu | 17.04 | noarch | libgcrypt20 | < 1.7.6-1ubuntu0.1 | UNKNOWN |
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.004 Low
EPSS
Percentile
73.4%