NULL pointer dereference in sqlite (Alpine package)

1) NULL pointer dereference

EUVDB-ID: #VU33221

Risk: Medium

CVSSv3.1: 6.5 [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-2017-15286

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in tableColumnList in shell.c because it fails to consider certain cases where `sqlite3_step(pStmt)==SQLITE_ROW` is false and a data structure is never initialized. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

sqlite (Alpine package): 3.20.1-r0 - 3.21.0-r1

sqlite (Alpine package):

CPE2.3

• cpe:2.3:o:alpine:sqlite_alpine_package:3.20.1-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:sqlite_alpine_package:3.21.0-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:sqlite_alpine_package:3.21.0-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:sqlite_alpine_package::*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=91728ec7bae0fc5f0a2669ad3d8edcdb8f37e4ac
http://git.alpinelinux.org/aports/commit/?id=d0e6ab95d3bd62ff2a28b3f6bfbbc29a01b4c70e

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.