An exploitable heap-based buffer overflow vulnerability exists when loading a PCX file in SDL2_image, version 2.0.4. A missing error handler can lead to a buffer overflow and potential code execution. An attacker can provide a specially crafted image file to trigger this vulnerability.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4238-1 advisory.

    It was discovered that SDL_image incorrectly handled certain image files. An attacker could possibly use     this issue to cause a denial of service or other unspecified impact.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for SDL2_image fixes the following issues :

Update to new upstream release 2.0.5.

Security issues fixed :

  - TALOS-2019-0820 CVE-2019-5051: exploitable heap-based     buffer overflow vulnerability when loading a PCX file     (boo#1140419)

  - TALOS-2019-0821 CVE-2019-5052: exploitable integer     overflow vulnerability when loading a PCX file     (boo#1140421)

  - TALOS-2019-0841 CVE-2019-5057: code execution     vulnerability in the PCX image-rendering functionality     of SDL2_image (boo#1143763)

  - TALOS-2019-0842 CVE-2019-5058: heap overflow in XCF     image rendering can lead to code execution (boo#1143764)

  - TALOS-2019-0843 CVE-2019-5059: heap overflow in XPM     image (boo#1143766)

  - TALOS-2019-0844 CVE-2019-5060: integer overflow in the     XPM image (boo#1143768)

Not mentioned by upstream, but issues seemingly further fixed :

  - CVE-2019-12218: NULL pointer dereference in the     SDL2_image function IMG_LoadPCX_RW (boo#1135789)

  - CVE-2019-12217: NULL pointer dereference in the SDL     stdio_read function (boo#1135787)

  - CVE-2019-12220: SDL_image triggers an out-of-bounds read     in the SDL function SDL_FreePalette_REAL (boo#1135806)

  - CVE-2019-12221: a SEGV caused by SDL_image in SDL     function SDL_free_REAL in stdlib/SDL_malloc.c     (boo#1135796)

  - CVE-2019-12222: out-of-bounds read triggered by     SDL_image in the function SDL_InvalidateMap at     video/SDL_pixels.c (boo#1136101)

  - CVE-2019-13616: fix heap buffer overflow when reading a     crafted bmp file (boo#1141844).

The following issues have been found in sdl-image1.2, the 1.x version of the image file loading library.

CVE-2018-3977

Heap buffer overflow in IMG_xcf.c. This vulnerability might be leveraged by remote attackers to cause remote code execution or denial of service via a crafted XCF file.

CVE-2019-5051

Heap based buffer overflow in IMG_LoadPCX_RW, in IMG_pcx.c. This vulnerability might be leveraged by remote attackers to cause remote code execution or denial of service via a crafted PCX file.

CVE-2019-5052

Integer overflow and subsequent buffer overflow in IMG_pcx.c. This vulnerability might be leveraged by remote attackers to cause remote code execution or denial of service via a crafted PCX file.

CVE-2019-7635

Heap buffer overflow affecting Blit1to4, in IMG_bmp.c. This vulnerability might be leveraged by remote attackers to cause denial of service or any other unspecified impact via a crafted BMP file.

CVE-2019-12216, CVE-2019-12217, CVE-2019-12218, CVE-2019-12219, CVE-2019-12220, CVE-2019-12221, CVE-2019-12222

Multiple out-of-bound read and write accesses affecting IMG_LoadPCX_RW, in IMG_pcx.c. These vulnerabilities might be leveraged by remote attackers to cause denial of service or any other unspecified impact via a crafted PCX file.

For Debian 8 'Jessie', these problems have been fixed in version 1.2.12-5+deb9u2.

We recommend that you upgrade your sdl-image1.2 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

SDL_image developers report :

Fixed a number of security issues :

- TALOS-2019-0820

- TALOS-2019-0821

- TALOS-2019-0841

- TALOS-2019-0842

- TALOS-2019-0843

- TALOS-2019-0844

ID	Name	Product	Family	Severity
132933	Ubuntu 16.04 LTS / 18.04 LTS : SDL_image vulnerabilities (USN-4238-1)	Nessus	Ubuntu Local Security Checks	high
128539	openSUSE Security Update : SDL2_image (openSUSE-2019-2070)	Nessus	SuSE Local Security Checks	high
127101	Debian DLA-1865-1 : sdl-image1.2 security update	Nessus	Debian Local Security Checks	high
126484	FreeBSD : SDL2_image -- multiple vulnerabilities (3394bc2b-9da4-11e9-951e-14dae9d5a9d2)	Nessus	FreeBSD Local Security Checks	high

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CVE-2019-5051

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