Canonical: >> Ubuntu Linux >> 17.10 Security Vulnerabilities
clamscan in ClamAV before 0.99.4 contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation checking mechanisms when handling Portable Document Format (.pdf) files sent to an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted .pdf file to an affected device. This action could cause an out-of-bounds read when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition. This concerns pdf_parse_array and pdf_parse_string in libclamav/pdfng.c. Cisco Bug IDs: CSCvh91380, CSCvh91400.
CVSS Score
5.5
EPSS Score
0.027
Published
2018-03-27
An issue was discovered in ImageMagick 7.0.7. A memory leak vulnerability was found in the function ReadPCDImage in coders/pcd.c, which allow remote attackers to cause a denial of service via a crafted file.
CVSS Score
6.5
EPSS Score
0.003
Published
2018-03-27
An issue was discovered in ImageMagick 7.0.7. The MogrifyImageList function in MagickWand/mogrify.c allows attackers to cause a denial of service (assertion failure and application exit in ReplaceImageInList) via a crafted file.
CVSS Score
6.5
EPSS Score
0.001
Published
2018-03-27
An issue was discovered in ImageMagick 7.0.7. A memory leak vulnerability was found in the function WriteGIFImage in coders/gif.c, which allow remote attackers to cause a denial of service via a crafted file.
CVSS Score
6.5
EPSS Score
0.003
Published
2018-03-27
In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.
CVSS Score
7.5
EPSS Score
0.12
Published
2018-03-26
In Apache httpd 2.4.0 to 2.4.29, the expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename.
CVSS Score
8.1
EPSS Score
0.941
Published
2018-03-26
In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications.
CVSS Score
5.3
EPSS Score
0.029
Published
2018-03-26
A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage.
CVSS Score
5.9
EPSS Score
0.063
Published
2018-03-26
A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability.
CVSS Score
7.5
EPSS Score
0.361
Published
2018-03-26
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
CVSS Score
9.8
EPSS Score
0.087
Published
2018-03-26