The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file.

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).

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

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)

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

ID	Name	Product	Family	Severity
87858	SUSE SLED12 / SLES12 Security Update : libmspack (SUSE-SU-2016:0011-1)	Nessus	SuSE Local Security Checks	medium
87276	SUSE SLED11 / SLES11 Security Update : libmspack (SUSE-SU-2015:2215-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2015-4469

medium

Tenable Plugins

medium

medium