CVE-2015-4467

libmspack was updated to fix several security vulnerabilities.

• Fix null pointer dereference on a crafted CAB. (bsc#934524, CVE-2014-9732)
• Fix denial of service while processing crafted CHM file. (bsc#934525, CVE-2015-4467)
• Fix denial of service while processing crafted CHM file. (bsc#934529, CVE-2015-4472)
• Fix pointer arithmetic overflow during CHM decompression. (bsc#934526, CVE-2015-4469)
• Fix off-by-one buffer over-read in mspack/mszipd.c. (bsc#934527, CVE-2015-4470)
• Fix off-by-one buffer under-read in mspack/lzxd.c. (bsc#934528, CVE-2015-4471)

libmspack was updated to fix security issues.

These security issues were fixed:

• CVE-2014-9732: The cabd_extract function in cabd.c in libmspack did not properly maintain decompression callbacks in certain cases where an invalid file follows a valid file, which allowed remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted CAB archive (bnc#934524).
• CVE-2015-4467: The chmd_init_decomp function in chmd.c in libmspack did not properly validate the reset interval, which allowed remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted CHM file (bnc#934525).
• CVE-2015-4468: Multiple integer overflows in the search_chunk function in chmd.c in libmspack allowed remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file (bnc#934526).
• CVE-2015-4469: The chmd_read_headers function in chmd.c in libmspack did not validate name lengths, which allowed remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file (bnc#934526).
• CVE-2015-4470: Off-by-one error in the inflate function in mszipd.c in libmspack allowed remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CAB archive (bnc#934527).
• CVE-2015-4471: Off-by-one error in the lzxd_decompress function in lzxd.c in libmspack allowed remote attackers to cause a denial of service (buffer under-read and application crash) via a crafted CAB archive (bnc#934528).
• CVE-2015-4472: Off-by-one error in the READ_ENCINT macro in chmd.c in libmspack allowed remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted CHM file (bnc#934529).

The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted CHM file.

Jakub Wilk discovered that libmspack did not correctly handle certain integer operations and bounds checking. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2015-4467, CVE-2015-4468, CVE-2015-4469, CVE-2015-4472)

It was discovered that libmspack incorrectly handled certain malformed CAB files. A remote attacker could use this issue to cause libmspack to crash, resulting in a denial of service. (CVE-2017-11423)

It was discovered that libmspack incorrectly handled certain malformed CHM files. A remote attacker could use this issue to cause libmspack to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-6419)

Hanno Böck discovered that libmspack incorrectly handled certain CHM files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-14679, CVE-2018-14680)

Jakub Wilk discovered that libmspack incorrectly handled certain KWAJ files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-14681)

Dmitry Glavatskikh discovered that libmspack incorrectly handled certain CHM files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-14682)

It was discovered libmspack incorrectly handled certain malformed CAB files. A remote attacker could use this issue to cause libmspack to crash, resulting in a denial of service. (CVE-2018-18585)

It was discovered that libmspack incorrectly handled certain CHM files. A remote attacker could possibly use this issue to access sensitive information. (CVE-2019-1010305)