Out-of-bounds read in curl (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU7885

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-1000101

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect website visitors to external websites.

The weakness exists due to out-of-bounds read. A local user can supply a URL containing specially crafted numerical range characters to trigger a heap read error and obtain potentially sensitive information from system memory

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

curl (Alpine package): 7.52.1-r1 - 7.54.1-r0

External links

http://git.alpinelinux.org/aports/commit/?id=4a60b4d3583938cdd36c82d763ac5167d7720079
http://git.alpinelinux.org/aports/commit/?id=8e6f31c56dbe2966fb43113f9c7c1039bbef9865
http://git.alpinelinux.org/aports/commit/?id=a51f2d7593706eb38073b80df6192c6730f36c60
http://git.alpinelinux.org/aports/commit/?id=dba8b02f8c7dbcbb9187eac2b24fd749edc37599

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.