CVE-2019-19203

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

The following packages have been upgraded to a later upstream version: php (7.3.20). (BZ#1856655)

Security Fix(es):

• php: Out-of-bounds read due to integer overflow in iconv_mime_decode_headers() (CVE-2019-11039)

• php: Buffer over-read in exif_read_data() (CVE-2019-11040)

• php: DirectoryIterator class accepts filenames with embedded \0 byte and treats them as terminating at that byte (CVE-2019-11045)

• php: Information disclosure in exif_read_data() (CVE-2019-11047)

• php: Integer wraparounds when receiving multipart forms (CVE-2019-11048)

• oniguruma: Use-after-free in onig_new_deluxe() in regext.c (CVE-2019-13224)

• oniguruma: NULL pointer dereference in match_at() in regexec.c (CVE-2019-13225)

• oniguruma: Stack exhaustion in regcomp.c because of recursion in regparse.c (CVE-2019-16163)

• oniguruma: Heap-based buffer over-read in function gb18030_mbc_enc_len in file gb18030.c (CVE-2019-19203)

• oniguruma: Heap-based buffer over-read in function fetch_interval_quantifier in regparse.c (CVE-2019-19204)

• pcre: Out of bounds read in JIT mode when \X is used in non-UTF mode (CVE-2019-20454)

• php: Out of bounds read in php_strip_tags_ex (CVE-2020-7059)

• php: Global buffer-overflow in mbfl_filt_conv_big5_wchar function (CVE-2020-7060)

• php: NULL pointer dereference in PHP session upload progress (CVE-2020-7062)

• php: Files added to tar with Phar::buildFromIterator have all-access permissions (CVE-2020-7063)

• php: Information disclosure in exif_read_data() function (CVE-2020-7064)

• php: Using mb_strtolower() function with UTF-32LE encoding leads to potential code execution (CVE-2020-7065)

• php: Heap buffer over-read in exif_scan_thumbnail() (CVE-2019-11041)

• php: Heap buffer over-read in exif_process_user_comment() (CVE-2019-11042)

• php: Out of bounds read when parsing EXIF information (CVE-2019-11050)

• oniguruma: Heap-based buffer overflow in str_lower_case_match in regexec.c (CVE-2019-19246)

• php: Information disclosure in function get_headers (CVE-2020-7066)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

The following packages have been upgraded to a later upstream version: php (7.3.20). (BZ#1856655)

Security Fix(es):

• php: Out-of-bounds read due to integer overflow in iconv_mime_decode_headers() (CVE-2019-11039)

• php: Buffer over-read in exif_read_data() (CVE-2019-11040)

• php: DirectoryIterator class accepts filenames with embedded \0 byte and treats them as terminating at that byte (CVE-2019-11045)

• php: Information disclosure in exif_read_data() (CVE-2019-11047)

• php: Integer wraparounds when receiving multipart forms (CVE-2019-11048)

• oniguruma: Use-after-free in onig_new_deluxe() in regext.c (CVE-2019-13224)

• oniguruma: NULL pointer dereference in match_at() in regexec.c (CVE-2019-13225)

• oniguruma: Stack exhaustion in regcomp.c because of recursion in regparse.c (CVE-2019-16163)

• oniguruma: Heap-based buffer over-read in function gb18030_mbc_enc_len in file gb18030.c (CVE-2019-19203)

• oniguruma: Heap-based buffer over-read in function fetch_interval_quantifier in regparse.c (CVE-2019-19204)

• pcre: Out of bounds read in JIT mode when \X is used in non-UTF mode (CVE-2019-20454)

• php: Out of bounds read in php_strip_tags_ex (CVE-2020-7059)

• php: Global buffer-overflow in mbfl_filt_conv_big5_wchar function (CVE-2020-7060)

• php: NULL pointer dereference in PHP session upload progress (CVE-2020-7062)

• php: Files added to tar with Phar::buildFromIterator have all-access permissions (CVE-2020-7063)

• php: Information disclosure in exif_read_data() function (CVE-2020-7064)

• php: Using mb_strtolower() function with UTF-32LE encoding leads to potential code execution (CVE-2020-7065)

• php: Heap buffer over-read in exif_scan_thumbnail() (CVE-2019-11041)

• php: Heap buffer over-read in exif_process_user_comment() (CVE-2019-11042)

• php: Out of bounds read when parsing EXIF information (CVE-2019-11050)

• oniguruma: Heap-based buffer overflow in str_lower_case_match in regexec.c (CVE-2019-19246)

• php: Information disclosure in function get_headers (CVE-2020-7066)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Oniguruma is a regular expressions library that supports a variety of character encodings.

Security Fix(es):

• oniguruma: Use-after-free in onig_new_deluxe() in regext.c (CVE-2019-13224)
• oniguruma: Stack exhaustion in regcomp.c because of recursion in regparse.c (CVE-2019-16163)
• oniguruma: integer overflow in search_in_range function in regexec.c leads to out-of-bounds read (CVE-2019-19012)
• oniguruma: Heap-based buffer over-read in function gb18030_mbc_enc_len in file gb18030.c (CVE-2019-19203)
• oniguruma: Heap-based buffer over-read in function fetch_interval_quantifier in regparse.c (CVE-2019-19204)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• CVE-2019-19203: fix heap-buffer-overflow in gb18030_mbc_enc_len by installing a GB18030-aware code_to_mbclen and filtering invalid code points from add_ctype_to_cc

Updated oniguruma packages fix security vulnerabilities:

A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe() (CVE-2019-13224).

A NULL Pointer Dereference in match_at() in regexec.c in Oniguruma 6.9.2 allows attackers to potentially cause denial of service by providing a crafted regular expression (CVE-2019-13225).

Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c (CVE-2019-16163).

An integer overflow in the search_in_range function in regexec.c leads to an out-of-bounds read, in which the offset of this read is under the control of an attacker. (This only affects the 32-bit compiled version). Remote attackers can cause a denial-of-service or information disclosure, or possibly have unspecified other impact, via a crafted regular expression (CVE-2019-19012).

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read (CVE-2019-19203).

In the function fetch_range_quantifier in regparse.c, PFETCH is called without checking PEND. This leads to a heap-based buffer over-read and lead to denial-of-service via a crafted regular expression (CVE-2019-19204).

Heap-based buffer over-read in str_lower_case_match in regexec.c can lead to denial-of-service via a crafted regular expression (CVE-2019-19246).

These are all security issues fixed in the libonig5-6.9.7.1-1.2 package on the GA media of openSUSE Tumbleweed.

This update for oniguruma fixes the following issues:

• CVE-2019-19246: Fixed an out of bounds access during regular expression matching (bsc#1157805).
• CVE-2019-19204: Fixed an out of bounds access when compiling a crafted regular expression (bsc#1164569).
• CVE-2019-19203: Fixed an out of bounds access when performing a string search (bsc#1164550).
• CVE-2019-16163: Fixed an uncontrolled recursion issue when compiling a crafted regular expression, which could lead to denial of service (bsc#1150130).
• CVE-2020-26159: Fixed an off-by-one buffer overflow (bsc#1177179).
• CVE-2019-13224: Fixed a potential use-after-free when handling multiple different encodings (bsc#1142847).

It was discovered that Oniguruma incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service, obtain sensitive information or other unspecified impact. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2019-16163, CVE-2019-19012, CVE-2019-19204, CVE-2019-19246)

It was discovered that Oniguruma incorrectly handled memory when using certain UChar pointers. An attacker could possibly use this issue to cause a denial of service or sensitive information disclosure. (CVE-2019-19203)