ID CVE-2015-1395
Summary Directory traversal vulnerability in GNU patch versions which support Git-style patching before 2.7.3 allows remote attackers to write to arbitrary files with the permissions of the target user via a .. (dot dot) in a diff file name.
References
Vulnerable Configurations
  • Fedora 20
    cpe:2.3:o:fedoraproject:fedora:20
  • Fedora 21
    cpe:2.3:o:fedoraproject:fedora:21
  • Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:14.04:-:-:-:lts
  • Canonical Ubuntu Linux 14.10
    cpe:2.3:o:canonical:ubuntu_linux:14.10
  • Canonical Ubuntu Linux 12.04 LTS
    cpe:2.3:o:canonical:ubuntu_linux:12.04:-:-:-:lts
  • cpe:2.3:a:gnu:patch:2.7.2
    cpe:2.3:a:gnu:patch:2.7.2
CVSS
Base: 7.8
Impact:
Exploitability:
CWE CWE-22
CAPEC
  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
  • Using Escaped Slashes in Alternate Encoding
    This attack targets the use of the backslash in alternate encoding. An attacker can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the attacker tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
nessus via4
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2015-050.NASL
    description Updated patch package fixes security vulnerabilities : It was reported that a crafted diff file can make patch eat memory and later segfault (CVE-2014-9637). It was reported that the versions of the patch utility that support Git-style patches are vulnerable to a directory traversal flaw. This could allow an attacker to overwrite arbitrary files by applying a specially crafted patch, with the privileges of the user running patch (CVE-2015-1395). GNU patch before 2.7.4 allows remote attackers to write to arbitrary files via a symlink attack in a patch file (CVE-2015-1196).
    last seen 2019-02-21
    modified 2019-01-02
    plugin id 81933
    published 2015-03-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81933
    title Mandriva Linux Security Advisory : patch (MDVSA-2015:050)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2651-1.NASL
    description Jakub Wilk discovered that GNU patch did not correctly handle file paths in patch files. An attacker could specially craft a patch file that could overwrite arbitrary files with the privileges of the user invoking the program. This issue only affected Ubuntu 12.04 LTS. (CVE-2010-4651) Laszlo Boszormenyi discovered that GNU patch did not correctly handle some patch files. An attacker could specially craft a patch file that could cause a denial of service. (CVE-2014-9637) Jakub Wilk discovered that GNU patch did not correctly handle symbolic links in git style patch files. An attacker could specially craft a patch file that could overwrite arbitrary files with the privileges of the user invoking the program. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1196) Jakub Wilk discovered that GNU patch did not correctly handle file renames in git style patch files. An attacker could specially craft a patch file that could overwrite arbitrary files with the privileges of the user invoking the program. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1395) Jakub Wilk discovered the fix for CVE-2015-1196 was incomplete for GNU patch. An attacker could specially craft a patch file that could overwrite arbitrary files with the privileges of the user invoking the program. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1396). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 84339
    published 2015-06-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=84339
    title Ubuntu 12.04 LTS / 14.04 LTS / 14.10 : patch vulnerabilities (USN-2651-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-1134.NASL
    description Security fixes for CVE-2014-9637 and CVE-2015-1196. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-01-30
    plugin id 81112
    published 2015-02-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81112
    title Fedora 21 : patch-2.7.3-1.fc21 (2015-1134)
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2015-138.NASL
    description Updated patch package fixes security vulnerabilities : It was reported that a crafted diff file can make patch eat memory and later segfault (CVE-2014-9637). It was reported that the versions of the patch utility that support Git-style patches are vulnerable to a directory traversal flaw. This could allow an attacker to overwrite arbitrary files by applying a specially crafted patch, with the privileges of the user running patch (CVE-2015-1395). GNU patch before 2.7.4 allows remote attackers to write to arbitrary files via a symlink attack in a patch file (CVE-2015-1196).
    last seen 2019-02-21
    modified 2018-07-19
    plugin id 82391
    published 2015-03-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82391
    title Mandriva Linux Security Advisory : patch (MDVSA-2015:138)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-1019-1.NASL
    description The GNU patch utility was updated to 2.7.5 to fix three security issues and one non-security bug. The following vulnerabilities were fixed : - CVE-2015-1196: directory traversal flaw when handling git-style patches. This could allow an attacker to overwrite arbitrary files by tricking the user into applying a specially crafted patch. (bsc#913678) - CVE-2015-1395: directory traversal flaw when handling patches which rename files. This could allow an attacker to overwrite arbitrary files by tricking the user into applying a specially crafted patch. (bsc#915328) - CVE-2015-1396: directory traversal flaw via symbolic links. This could allow an attacker to overwrite arbitrary files by tricking the user into applying a by applying a specially crafted patch. (bsc#915329) The following bug was fixed : - bsc#904519: Function names in hunks (from diff -p) are now preserved in reject files. 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.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 84083
    published 2015-06-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=84083
    title SUSE SLED12 / SLES12 Security Update : patch (SUSE-SU-2015:1019-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-1165.NASL
    description Security fixes for CVE-2014-9637, CVE-2015-1196, and an infinite loop with a crafted diff. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-01-30
    plugin id 82596
    published 2015-04-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82596
    title Fedora 20 : patch-2.7.5-1.fc20 (2015-1165)
refmap via4
bid 72846
confirm
fedora
  • FEDORA-2015-1134
  • FEDORA-2015-1165
misc https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775873
mlist [oss-security] 20150127 Re: CVE Request: patch: directory traversal via file rename
ubuntu USN-2651-1
Last major update 25-08-2017 - 14:29
Published 25-08-2017 - 14:29
Last modified 29-08-2017 - 21:13
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