#VU23187 Out-of-bounds read in Red Hat Inc. Operating systems & Components
Vulnerability identifier: #VU23187
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Red Hat Enterprise Linux Server
Operating systems & Components /
Operating system
Red Hat Enterprise Linux Workstation
Operating systems & Components /
Operating system
Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components /
Operating system
Red Hat Enterprise Linux for Power
Operating systems & Components /
Operating system
Red Hat Enterprise Linux Desktop
Operating systems & Components /
Operating system
Red Hat Enterprise Linux for x86_64
Operating systems & Components /
Operating system
Vendor: Red Hat Inc.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to heap-based buffer over-read in the "BlitNtoN" function in the "video/SDL_blit_N.c" file when called from the "SDL_SoftBlit" function in the "video/SDL_blit.c" file. A remote attacker can trick a victim to open a specially crafted file and perform a denial of service attack.
Note, this issue exists due to incorrect patch implementation in Red Hat Enterprise Linux 7 for vulnerability CVE-2019-13616, described in SB2019112513.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Red Hat Enterprise Linux Server: 7 - 7.7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux for IBM z Systems: 7 - 7.7
Red Hat Enterprise Linux for Power: 7 - 7.7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux for x86_64: 7.0 - 7.7
External links
http://access.redhat.com/errata/RHSA-2019:4024
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.
