The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has libxkbcommon packages installed that are affected by multiple vulnerabilities:

  - Unchecked NULL pointer usage in LookupModMask in     xkbcomp/expr.c in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference)     the xkbcommon parser by supplying a crafted keymap file     with invalid virtual modifiers. (CVE-2018-15862)

  - Unchecked NULL pointer usage in ResolveStateAndPredicate     in xkbcomp/compat.c in xkbcommon before 0.8.2 could be     used by local attackers to crash (NULL pointer     dereference) the xkbcommon parser by supplying a crafted     keymap file with a no-op modmask expression.
    (CVE-2018-15863)

  - Unchecked NULL pointer usage in resolve_keysym in     xkbcomp/parser.y in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference)     the xkbcommon parser by supplying a crafted keymap file,     because a map access attempt can occur for a map that     was never created. (CVE-2018-15864)

  - Endless recursion exists in xkbcomp/expr.c in xkbcommon     and libxkbcommon before 0.8.1, which could be used by     local attackers to crash xkbcommon users by supplying a     crafted keymap file that triggers boolean negation.
    (CVE-2018-15853)

  - Unchecked NULL pointer usage when parsing invalid atoms     in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before     0.8.2 could be used by local attackers to crash (NULL     pointer dereference) the xkbcommon parser by supplying a     crafted keymap file, because lookup failures are     mishandled. (CVE-2018-15859)

  - Unchecked NULL pointer usage in ExprResolveLhs in     xkbcomp/expr.c in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference)     the xkbcommon parser by supplying a crafted keymap file     that triggers an xkb_intern_atom failure.
    (CVE-2018-15861)

  - An invalid free in ExprAppendMultiKeysymList in     xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be     used by local attackers to crash xkbcommon keymap     parsers or possibly have unspecified other impact by     supplying a crafted keymap file. (CVE-2018-15857)

  - An infinite loop when reaching EOL unexpectedly in     compose/parser.c (aka the keymap parser) in xkbcommon     before 0.8.1 could be used by local attackers to cause a     denial of service during parsing of crafted keymap     files. (CVE-2018-15856)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1     could be used by local attackers to crash (NULL pointer     dereference) the xkbcommon parser by supplying a crafted     keymap file, because the XkbFile for an xkb_geometry     section was mishandled. (CVE-2018-15855)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1     could be used by local attackers to crash (NULL pointer     dereference) the xkbcommon parser by supplying a crafted     keymap file, because geometry tokens were desupported     incorrectly. (CVE-2018-15854)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2079 advisory.

    - Fixes for       CVE-2018-15864, CVE-2018-15863, CVE-2018-15862, CVE-2018-15861,       CVE-2018-15859  CVE-2018-15857, CVE-2018-15856, CVE-2018-15855,       CVE-2018-15854, CVE-2018-15853

    mesa-libGLw

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has xorg-x11-drv-ati packages installed that are affected by multiple vulnerabilities:

  - An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can     send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed     later on, leading to DoS (segmentation fault). (CVE-2018-14598)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable     to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other     impact. (CVE-2018-14599)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a     variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading     to DoS or remote code execution. (CVE-2018-14600)

  - Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used     by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean     negation. (CVE-2018-15853)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL     pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were     desupported incorrectly. (CVE-2018-15854)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL     pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an     xkb_geometry section was mishandled. (CVE-2018-15855)

  - An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon     before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted     keymap files. (CVE-2018-15856)

  - An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be     used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by     supplying a crafted keymap file. (CVE-2018-15857)

  - Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon     before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by     supplying a crafted keymap file, because lookup failures are mishandled. (CVE-2018-15859)

  - Unchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file that triggers an xkb_intern_atom failure. (CVE-2018-15861)

  - Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by     local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file with invalid virtual modifiers. (CVE-2018-15862)

  - Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2     could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a     crafted keymap file with a no-op modmask expression. (CVE-2018-15863)

  - Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file, because a map access attempt can occur for a map that was never created. (CVE-2018-15864)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has mesa-libGLw packages installed that are affected by multiple vulnerabilities:

  - An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can     send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed     later on, leading to DoS (segmentation fault). (CVE-2018-14598)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable     to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other     impact. (CVE-2018-14599)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a     variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading     to DoS or remote code execution. (CVE-2018-14600)

  - Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used     by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean     negation. (CVE-2018-15853)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL     pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were     desupported incorrectly. (CVE-2018-15854)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL     pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an     xkb_geometry section was mishandled. (CVE-2018-15855)

  - An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon     before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted     keymap files. (CVE-2018-15856)

  - An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be     used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by     supplying a crafted keymap file. (CVE-2018-15857)

  - Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon     before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by     supplying a crafted keymap file, because lookup failures are mishandled. (CVE-2018-15859)

  - Unchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file that triggers an xkb_intern_atom failure. (CVE-2018-15861)

  - Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by     local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file with invalid virtual modifiers. (CVE-2018-15862)

  - Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2     could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a     crafted keymap file with a no-op modmask expression. (CVE-2018-15863)

  - Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon before 0.8.2 could be used     by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap     file, because a map access attempt can occur for a map that was never created. (CVE-2018-15864)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the libxkbcommon packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1     could be used by local attackers to crash (NULL pointer     dereference) the xkbcommon parser by supplying a     crafted keymap file, because geometry tokens were     desupported incorrectly.(CVE-2018-15854)

  - Unchecked NULL pointer usage in xkbcommon before 0.8.1     could be used by local attackers to crash (NULL pointer     dereference) the xkbcommon parser by supplying a     crafted keymap file, because the XkbFile for an     xkb_geometry section was mishandled.(CVE-2018-15855)

  - An infinite loop when reaching EOL unexpectedly in     compose/parser.c (aka the keymap parser) in xkbcommon     before 0.8.1 could be used by local attackers to cause     a denial of service during parsing of crafted keymap     files.(CVE-2018-15856)

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

The version of AOS installed on the remote host is prior to 5.16. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16 advisory.

  - Gnome Pango 1.42 and later is affected by: Buffer Overflow. The impact is: The heap based buffer overflow     can be used to get code execution. The component is: function name: pango_log2vis_get_embedding_levels,     assignment of nchars and the loop condition. The attack vector is: Bug can be used when application pass     invalid utf-8 strings to functions like pango_itemize. (CVE-2019-1010238)

  - curl before version 7.61.1 is vulnerable to a buffer overrun in the NTLM authentication code. The internal     function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how     large temporary storage area to allocate from the heap. The length value is then subsequently used to     iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit     size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31     bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the     intended very huge one, making the use of that buffer end up in a heap buffer overflow. (This bug is     almost identical to CVE-2017-8816.) (CVE-2018-14618)

  - An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can     send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed     later on, leading to DoS (segmentation fault). (CVE-2018-14598)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable     to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other     impact. (CVE-2018-14599)

  - An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a     variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading     to DoS or remote code execution. (CVE-2018-14600)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

安全修复：- libX11：ListExt.c 的 XListExtensions 中发生无效回复，进而导致崩溃 (CVE-2018-14598) - libX11：ListExt.c 的 XListExtensions 中发生差一错误 (CVE-2018-14599) - libX11：ListExt.c 的 XListExtensions 中发生越界写入 (CVE-2018-14600) - libxkbcommon：ExprAppendMultiKeysymList 中发生无效释放，进而导致崩溃 (CVE-2018-15857) - libxkbcommon：xkbcomp/expr.c 中发生无限递回，进而导致崩溃 (CVE-2018-15853) - libxkbcommon：空指针取消引用导致崩溃 (CVE-2018-15854) - libxkbcommon：处理　xkb_geometry　时发生空指针取消引用 (CVE-2018-15855) - libxkbcommon：意外连线 EOL 时发生无限循环，进而导致崩溃 (CVE-2018-15856) - libxkbcommon：在 ExprResolveLhs 中解析无效的原子时发生空指针取消引用，进而导致崩溃 (CVE-2018-15859) - libxkbcommon：ExprResolveLhs 中的空指针取消引用导致崩溃 (CVE-2018-15861) - libxkbcommon：LookupModMask 中的空指针取消引用导致崩溃 (CVE-2018-15862) - libxkbcommon：ResolveStateAndPredicate 中的空指针取消引用导致崩溃 (CVE-2018-15863) - libxkbcommon：resolve_keysym 中的空指针取消引用导致崩溃 (CVE-2018-15864)

远程主机受到 GLSA-201810-05 中所述漏洞的影响（xkbcommon：多个漏洞）在 libxkbcommon 中发现多个漏洞。请检查下面引用的 CVE 标识符以了解详细信息。影响：本地攻击者可提供特别构建的 keymap 文件，从而可能导致拒绝服务情况。解决方法：目前无任何已知的解决方法。

远程 Ubuntu 18.04 LTS 主机上安装的多个程序包受到 USN-3786-2 公告中提及的多个漏洞影响。

    USN-3786-1 修复了 libxkbcommon 中的多个漏洞。此更新提供针对 Ubuntu 18.04 LTS 的相应更新。



Tenable 已直接从 Ubuntu 安全公告中提取上述描述块。

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

远程主机上安装的 AOS 版本低于 5.11.2。因此，其受到 NXSA-AOS-5.11.2 公告中提及的多个漏洞影响。

  - Gnome Pango 1.42 及更高版本受到下列因素影响：缓冲区溢出。影响为：基于堆的缓冲区溢出可用来执行代码。组件为：函数名称：pango_log2vis_get_embedding_levels，nchars 和无限循环的任务。攻击向量为：当应用程序向 pango_itemize 等函数传递无效 utf-8 字符串时，可使用该错误。(CVE-2019-1010238)

  - curl 7.61.1 之前版本容易受到 NTLM 验证码中的缓冲区溢出漏洞影响。内部函数 Curl_ntlm_core_mk_nt_hash 会将密码长度乘以二 (SUM) 以计算从堆配置的临时存储区域大小。长度值之后会用来逐一循环访问密码，并在分配的存储缓冲区中生成输出。在具有 32 位 size_t 的系统上，当密码长度超过 2GB (2^31 个字节) 时，计算 SUM 的数学会触发整数溢出。此整数溢出通常会造成实际分配非常小的缓冲区，而不是预期非常大的缓冲区，进而利用该缓冲区结束堆缓冲区溢出。（此错误与 CVE-2017-8816 基本相同。）(CVE-2018-14618)

  - 在 libX11 1.6.5 及之前所有版本中，在 ListExt.c 的 XListExtensions 中发现一个问题。恶意服务器可发送首个字符串溢出的回复，造成变量设置为空，随后又将其释放，从而导致段错误和拒绝服务。(CVE-2018-14598)

  - 在 libX11 1.6.5 及之前所有版本中发现一个问题。ListExt.c 中的 XListExtensions 函数容易受到由恶意服务器响应导致的大小差一错误影响，从而导致 DoS 或可能造成其他不明影响。(CVE-2018-14599)

  - 在 libX11 1.6.5 及之前所有版本中发现一个问题。ListExt.c 中的 XListExtensions 函数会将变量解释为已签名，而非未签名，这可造成越界写入（最多 128 个字节），从而导致拒绝服务或远程代码执行。(CVE-2018-14600)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

ID	Name	Product	Family	Published	Updated	Severity
132511	NewStart CGSL CORE 5.05 / MAIN 5.05 : libxkbcommon Multiple Vulnerabilities (NS-SA-2019-0246)	Nessus	NewStart CGSL Local Security Checks	12/31/2019	1/14/2021	high
180786	Oracle Linux 7 : Xorg (ELSA-2019-2079)	Nessus	Oracle Linux Local Security Checks	9/7/2023	11/1/2024	critical
174058	NewStart CGSL CORE 5.05 / MAIN 5.05 : xorg-x11-drv-ati Multiple Vulnerabilities (NS-SA-2023-0026)	Nessus	NewStart CGSL Local Security Checks	4/11/2023	4/11/2023	critical
174065	NewStart CGSL CORE 5.05 / MAIN 5.05 : mesa-libGLw Multiple Vulnerabilities (NS-SA-2023-0024)	Nessus	NewStart CGSL Local Security Checks	4/11/2023	4/11/2023	critical
144269	EulerOS 2.0 SP5 : libxkbcommon (EulerOS-SA-2020-2554)	Nessus	Huawei Local Security Checks	12/15/2020	2/1/2024	medium
164573	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16)	Nessus	Misc.	9/1/2022	7/22/2025	critical
128206	Scientific Linux 安全更新：SL7.x x86_64 上的 X.org	Nessus	Scientific Linux Local Security Checks	8/27/2019	5/1/2024	critical
118505	GLSA-201810-05：xkbcommon：多个漏洞	Nessus	Gentoo Local Security Checks	10/31/2018	1/31/2022	high
118794	Ubuntu 18.04 LTS：libxkbcommon 漏洞 (USN-3786-2)	Nessus	Ubuntu Local Security Checks	11/7/2018	10/29/2024	high
164608	Nutanix AOS：多个漏洞 (NXSA-AOS-5.11.2)	Nessus	Misc.	9/1/2022	7/22/2025	critical

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