Bug 1198092 (CVE-2022-28391)

Summary:	VUL-0: CVE-2022-28391: busybox: arbitrary code execution if netstat is used to print a DNS PTR record's value to a VT compatible terminal
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Robert Frohl <rfrohl>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P3 - Medium	CC:	gabriele.sonnu, ncutler, smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/327985/
Whiteboard:	CVSSv3.1:SUSE:CVE-2022-28391:7.5:(AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	1199106

Description Robert Frohl 2022-04-05 13:06:19 UTC

CVE-2022-28391

BusyBox through 1.35.0 allows remote attackers to execute arbitrary code if
netstat is used to print a DNS PTR record's value to a VT compatible terminal.
Alternatively, the attacker could choose to change the terminal's colors.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-28391
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28391
https://git.alpinelinux.org/aports/plain/main/busybox/0002-nslookup-sanitize-all-printed-strings-with-printable.patch
https://gitlab.alpinelinux.org/alpine/aports/-/issues/13661
https://git.alpinelinux.org/aports/plain/main/busybox/0001-libbb-sockaddr2str-ensure-only-printable-characters-.patch

Comment 1 Robert Frohl 2022-04-05 13:23:11 UTC

tracking as affected, based on busybox.SuSE.config/busybox.config:

- SUSE:SLE-11:Update/busybox
- SUSE:SLE-12:Update/busybox
- SUSE:SLE-15:Update/busybox
- SUSE:SLE-15-SP4:Update/busybox
- openSUSE:Factory/busybox

Comment 3 Radoslav Kolev 2022-07-19 16:02:29 UTC

I investigated this further, and the problem seems to only be present when busybox is build against musl. At least I couldn't reproduce the issue with our busybox package in carwos, based on SLE15-SP2. With the exact same DNS server config the issue is reproducible on Alpine Linux, which uses musl.