CVE-2021-33657

2022-04-0100:00:00

ubuntu.com

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.005 Low

EPSS

Percentile

75.9%

JSON

There is a heap overflow problem in video/SDL_pixels.c in SDL (Simple
DirectMedia Layer) 2.x to 2.0.18 versions. By crafting a malicious .BMP
file, an attacker can cause the application using this library to crash,
denial of service or Code execution.

Bugs

<https://github.com/libsdl-org/SDL/issues/5042>

Notes

Author	Note
rodrigo-zaiden	The POC from the SDL issue link only reproduces in versions 2.0.16 and 2.0.18 because of the following commit https://github.com/libsdl-org/SDL/commit/fed84650 In older versions of libsdl2 and also libsdl1.2, even though the commit above is not present, I think that there might be a slight chance to trick the lib with a special crafted input to cause the heap overflow, and patching will not cause any harm.

Author

Note

rodrigo-zaiden

The POC from the SDL issue link only reproduces in versions 2.0.16 and 2.0.18 because of the following commit https://github.com/libsdl-org/SDL/commit/fed84650 In older versions of libsdl2 and also libsdl1.2, even though the commit above is not present, I think that there might be a slight chance to trick the lib with a special crafted input to cause the heap overflow, and patching will not cause any harm.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlibsdl1.2< 1.2.15+dfsg2-0.1ubuntu0.2UNKNOWN
ubuntu20.04noarchlibsdl1.2< anyUNKNOWN
ubuntu22.04noarchlibsdl1.2< anyUNKNOWN
ubuntu14.04noarchlibsdl1.2< 1.2.15-8ubuntu1.1+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlibsdl1.2< 1.2.15+dfsg1-3ubuntu0.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlibsdl2< anyUNKNOWN
ubuntu20.04noarchlibsdl2< anyUNKNOWN
ubuntu21.10noarchlibsdl2< 2.0.14+dfsg2-3ubuntu0.1UNKNOWN
ubuntu14.04noarchlibsdl2< anyUNKNOWN
ubuntu16.04noarchlibsdl2< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	libsdl1.2	< 1.2.15+dfsg2-0.1ubuntu0.2	UNKNOWN
ubuntu	20.04	noarch	libsdl1.2	< any	UNKNOWN
ubuntu	22.04	noarch	libsdl1.2	< any	UNKNOWN
ubuntu	14.04	noarch	libsdl1.2	< 1.2.15-8ubuntu1.1+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	16.04	noarch	libsdl1.2	< 1.2.15+dfsg1-3ubuntu0.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	18.04	noarch	libsdl2	< any	UNKNOWN
ubuntu	20.04	noarch	libsdl2	< any	UNKNOWN
ubuntu	21.10	noarch	libsdl2	< 2.0.14+dfsg2-3ubuntu0.1	UNKNOWN
ubuntu	14.04	noarch	libsdl2	< any	UNKNOWN
ubuntu	16.04	noarch	libsdl2	< any	UNKNOWN