Amazon Linux AMI update for curl

1) Buffer overflow

EUVDB-ID: #VU33022

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9586

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.

Mitigation

Update the affected packages:

i686:
    curl-7.47.1-9.70.amzn1.i686
    libcurl-7.47.1-9.70.amzn1.i686
    curl-debuginfo-7.47.1-9.70.amzn1.i686
    libcurl-devel-7.47.1-9.70.amzn1.i686

src:
    curl-7.47.1-9.70.amzn1.src

x86_64:
    curl-debuginfo-7.47.1-9.70.amzn1.x86_64
    libcurl-7.47.1-9.70.amzn1.x86_64
    curl-7.47.1-9.70.amzn1.x86_64
    libcurl-devel-7.47.1-9.70.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2017-806.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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