SB2017070520 - Side-channel attack in libgcrypt (Alpine package)
Published: July 5, 2017
Security Bulletin ID
SB2017070520
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Side-channel attack (CVE-ID: CVE-2017-7526)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.The vulnerability exists in libgcrypt's RSA-1024 implementation using left-to-right method for computing the sliding-window expansion. A remote attacker can perform side-channel attack and gain access to potentially sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=5b0ee235b6418582ba3c800c8ae436ce158cede7
- https://git.alpinelinux.org/aports/commit/?id=d8f3cd13cfcddc8a83bed4ad7ebae18137c2fe88
- https://git.alpinelinux.org/aports/commit/?id=e4ae7cc634fa671b2160757e870d45646cf8f1ea
- https://git.alpinelinux.org/aports/commit/?id=e955a21066463990d83686df530393c772a4c517
- https://git.alpinelinux.org/aports/commit/?id=6895452f9306041d563023e9fae6b77ac6c27dae
- https://git.alpinelinux.org/aports/commit/?id=f11d5afa3b8a26a5fef94feaf00c7a413ef0b62e
- https://git.alpinelinux.org/aports/commit/?id=03d53aaa064c5812651cd6cdad8018514d23fa04
- https://git.alpinelinux.org/aports/commit/?id=95b3d924de75435596c3a72e003dcdb160de6494
- https://git.alpinelinux.org/aports/commit/?id=0a136a759e334c040e1d08e14795ad69930c5622