Mozilla: Memory safety bugs fixed in Firefox 65 and Firefox ESR 60.5

Mozilla developers and community members reported memory safety bugs present in Firefox 64 and Firefox ESR 60.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

A heap-based buffer over-read exists in libopencad 0.2.0 in the ReadCHAR function in lib/dwg/io.cpp, resulting in an application crash.

A heap-based buffer over-read exists in libopencad 0.2.0 in the ReadMCHAR function in lib/dwg/io.cpp, resulting in an application crash.

The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.

The GfxImageColorMap class in GfxState.cc in Xpdf 4.00 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.

CCITTFaxStream::readRow() in Stream.cc in Xpdf 4.00 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.

kernel: Faulty computation of numberic bounds in the BPF verifier

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

OpenEXR: Memory leak in ThreadPool in in IlmBase/IlmThread/IlmThreadPool.cpp

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Qemu: Integer overflow in ccid_card_vscard_read() allows memory corruption

Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value.

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

A heap-based buffer over-read was discovered in the tcpreplay-edit binary of Tcpreplay 4.3.0 beta1, during the incremental checksum operation. The issue gets triggered in the function csum_replace4() in incremental_checksum.h, causing a denial of service.

Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file searches within File Manager, leading to an out-of-bounds read and SEGV. This could potentially be exploited by an arbitrary local user who creates files in /tmp before the victim uses this input method.

chromium-browser: Out of bounds read in V8

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

perl: Heap-based buffer overflow in S_regatom()

Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

perl: Heap-based buffer read overflow in S_grok_bslash_N()

Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.

perl: Integer overflow leading to buffer overflow in Perl_my_setenv()

Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

elfutils: invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl

An invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl in elfutils through v0.174. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by consider_notes.

A vulnerability exists in the file reading procedure in Open Design Alliance Drawings SDK 2019Update1 on non-Windows platforms in which attackers could perform read operations past the end, or before the beginning, of the intended buffer. This can allow attackers to obtain sensitive information from process memory or cause a crash.

An issue was discovered in libgig 4.1.0. There is a heap-based buffer over-read in RIFF::List::GetListTypeString in RIFF.cpp.

An issue was discovered in libgig 4.1.0. There is a heap-based buffer over-read in DLS::Region::GetSample() in DLS.cpp.