Amazon Linux AMI update for http-parser

1) Heap-based buffer overflow

EUVDB-ID: #VU16168

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-12121

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to heap-based buffer overflow. A remote attacker can send many requests with the maximum size HTTP header of nearly 80kb/connection in combination with carefully handled completion of those headers, trigger memory corruption and cause the Node.js HTTP server to abort.

Mitigation

Update the affected packages:

i686:
    http-parser-debuginfo-2.9.3-1.2.amzn1.i686
    http-parser-devel-2.9.3-1.2.amzn1.i686
    http-parser-2.9.3-1.2.amzn1.i686

src:
    http-parser-2.9.3-1.2.amzn1.src

x86_64:
    http-parser-2.9.3-1.2.amzn1.x86_64
    http-parser-debuginfo-2.9.3-1.2.amzn1.x86_64
    http-parser-devel-2.9.3-1.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1359.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.

2) HTTP response splitting

EUVDB-ID: #VU12575

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-7159

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to write arbitrary files on the target system.

The weakness exists due to spaces in Content-Length HTTP headers from Node.js’s HTTP module entirely ignore spaces within the value, despite the HTTP specification not allowing spaces within the values. A remote attacker can confuse the script and write arbitrary files.

Mitigation

Update the affected packages:

i686:
    http-parser-debuginfo-2.9.3-1.2.amzn1.i686
    http-parser-devel-2.9.3-1.2.amzn1.i686
    http-parser-2.9.3-1.2.amzn1.i686

src:
    http-parser-2.9.3-1.2.amzn1.src

x86_64:
    http-parser-2.9.3-1.2.amzn1.x86_64
    http-parser-debuginfo-2.9.3-1.2.amzn1.x86_64
    http-parser-devel-2.9.3-1.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1359.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.

3) HTTP request smuggling

EUVDB-ID: #VU25013

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15605

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to insufficient validation of Transfer-Encoding header. A remote attacker can send a specially crafted HTTP request to the application and perform a request smuggling attack.

Mitigation

Update the affected packages:

i686:
    http-parser-debuginfo-2.9.3-1.2.amzn1.i686
    http-parser-devel-2.9.3-1.2.amzn1.i686
    http-parser-2.9.3-1.2.amzn1.i686

src:
    http-parser-2.9.3-1.2.amzn1.src

x86_64:
    http-parser-2.9.3-1.2.amzn1.x86_64
    http-parser-debuginfo-2.9.3-1.2.amzn1.x86_64
    http-parser-devel-2.9.3-1.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1359.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.