Amazon Linux AMI update for curl

1) Buffer overflow

EUVDB-ID: #VU33154

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7407

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

The ourWriteOut function in tool_writeout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a '%' character, which leads to a heap-based buffer over-read.

Mitigation

Update the affected packages:

i686:
    curl-debuginfo-7.51.0-6.74.amzn1.i686
    libcurl-devel-7.51.0-6.74.amzn1.i686
    libcurl-7.51.0-6.74.amzn1.i686
    curl-7.51.0-6.74.amzn1.i686

src:
    curl-7.51.0-6.74.amzn1.src

x86_64:
    libcurl-7.51.0-6.74.amzn1.x86_64
    curl-7.51.0-6.74.amzn1.x86_64
    curl-debuginfo-7.51.0-6.74.amzn1.x86_64
    libcurl-devel-7.51.0-6.74.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2017-850.html

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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