ALT-PU-2024-17256-3

BDU:2022-01680

MEDIUM6.5

Уязвимость компонента stb_image.h реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2022-04-01

CVSS 3.xMEDIUM 6.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:C

References

CVE-2020-21049

BDU:2022-01744

HIGH8.8

Уязвимость функции dither_func_fs компонента tosixel.c реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании

Published: 2022-04-05

CVSS 3.xHIGH 8.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

CVE-2020-21547

BDU:2022-02074

MEDIUM6.5

Уязвимость компонента dither.c реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2022-04-11

CVSS 3.xMEDIUM 6.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:C

References

CVE-2020-21048

BDU:2022-02076

MEDIUM6.5

Уязвимость функции gif_process_raster компонента fromgif.c реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2022-04-11

CVSS 3.xMEDIUM 6.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:C

References

CVE-2020-21050

CVE-2018-19756

MEDIUM5.5

There is a heap-based buffer over-read at stb_image.h (function: stbi__tga_load) in libsixel 1.8.2 that will cause a denial of service.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2018-19757

MEDIUM6.5

There is a NULL pointer dereference at function sixel_helper_set_additional_message (status.c) in libsixel 1.8.2 that will cause a denial of service.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2018-19759

MEDIUM5.5

There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2018-19761

MEDIUM5.5

There is an illegal address access at fromsixel.c (function: sixel_decode_raw_impl) in libsixel 1.8.2 that will cause a denial of service.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2018-19762

HIGH7.8

There is a heap-based buffer overflow at fromsixel.c (function: image_buffer_resize) in libsixel 1.8.2 that will cause a denial of service or possibly unspecified other impact.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 7.8

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2018-19763

MEDIUM5.5

There is a heap-based buffer over-read at writer.c (function: write_png_to_file) in libsixel 1.8.2 that will cause a denial of service.

Published: 2018-11-30Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-11024

MEDIUM5.5

The load_pnm function in frompnm.c in libsixel.a in libsixel 1.8.2 has infinite recursion.

Published: 2019-04-08Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-19635

CRITICAL9.8

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function sixel_decode_raw_impl at fromsixel.c.

Published: 2019-12-08Modified: 2026-04-24

CVSS 2.0HIGH 7.5

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2019-19636

CRITICAL9.8

An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_encode_body at tosixel.c.

Published: 2019-12-08Modified: 2026-04-24

CVSS 2.0HIGH 7.5

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2019-19637

CRITICAL9.8

An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_decode_raw_impl at fromsixel.c.

Published: 2019-12-08Modified: 2026-04-24

CVSS 2.0HIGH 7.5

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2019-19638

CRITICAL9.8

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c, due to an integer overflow.

Published: 2019-12-08Modified: 2026-04-24

CVSS 2.0HIGH 7.5

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2019-19777

HIGH8.8

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.

Published: 2019-12-13Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2019-19778

HIGH8.8

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer over-read in the function load_sixel at loader.c.

Published: 2019-12-13Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2019-20022

MEDIUM6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Published: 2019-12-27Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-20023

MEDIUM6.5

A memory leak was discovered in image_buffer_resize in fromsixel.c in libsixel 1.8.4.

Published: 2019-12-27Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-20024

MEDIUM6.5

A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4.

Published: 2019-12-27Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-3573

MEDIUM5.5

In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.

Published: 2019-01-02Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2019-3574

HIGH7.8

In libsixel v1.8.2, there is a heap-based buffer over-read in the function load_jpeg() in the file loader.c, as demonstrated by img2sixel.

Published: 2019-01-02Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 7.8

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2020-11721

MEDIUM6.5

load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.

Published: 2020-04-12Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2020-19668

MEDIUM6.5

Unverified indexs into the array lead to out of bound access in the gif_out_code function in fromgif.c in libsixel 1.8.6.

Published: 2020-11-20Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2020-21048

MEDIUM6.5

An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.

Published: 2021-09-14Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2020-21049

MEDIUM6.5

An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.

Published: 2021-09-14Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2020-21050

MEDIUM6.5

Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.

Published: 2021-09-14Modified: 2026-04-24

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

CVE-2020-21547

HIGH8.8

Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.

Published: 2021-09-17Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2021-40656

HIGH8.8

libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.

Published: 2022-04-08Modified: 2026-04-24

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Package update libsixel in branch c9f2

Closed issues (29)

Уязвимость компонента stb_image.h реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость компонента dither.c реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции gif_process_raster компонента fromgif.c реализации кодировщика/декодера SIXEL Libsixel, позволяющая нарушителю вызвать отказ в обслуживании

There is a heap-based buffer over-read at stb_image.h (function: stbi__tga_load) in libsixel 1.8.2 that will cause a denial of service.

There is a NULL pointer dereference at function sixel_helper_set_additional_message (status.c) in libsixel 1.8.2 that will cause a denial of service.

There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.

There is an illegal address access at fromsixel.c (function: sixel_decode_raw_impl) in libsixel 1.8.2 that will cause a denial of service.

There is a heap-based buffer overflow at fromsixel.c (function: image_buffer_resize) in libsixel 1.8.2 that will cause a denial of service or possibly unspecified other impact.

There is a heap-based buffer over-read at writer.c (function: write_png_to_file) in libsixel 1.8.2 that will cause a denial of service.

The load_pnm function in frompnm.c in libsixel.a in libsixel 1.8.2 has infinite recursion.

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function sixel_decode_raw_impl at fromsixel.c.

An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_encode_body at tosixel.c.

An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_decode_raw_impl at fromsixel.c.

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c, due to an integer overflow.

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer over-read in the function load_sixel at loader.c.

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

A memory leak was discovered in image_buffer_resize in fromsixel.c in libsixel 1.8.4.

A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4.

In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.

In libsixel v1.8.2, there is a heap-based buffer over-read in the function load_jpeg() in the file loader.c, as demonstrated by img2sixel.

load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.

Unverified indexs into the array lead to out of bound access in the gif_out_code function in fromgif.c in libsixel 1.8.6.

An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.

An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.

Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.

Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.

libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.